Light sources with improved brightness based on laser phosphors

Abstract

The present invention provides an illumination system (1000) configured to generate illumination system light (1001), wherein the illumination system light (1001) comprises one or more of the following: (i) having a first component optical power W opt,comp1 The first lighting system light component (1101) and (ii) having a second component light power W opt,comp2 a second illumination system light component (1201); wherein the illumination system (1000) comprises: a first light source (110), comprising a first pump light source (10) configured to generate a first pump light source light (11) and a luminescent material (200) configured to convert at least a portion of the first pump light source light (11) into luminescent material light (201), wherein the first light source (110) optionally combined with a first optical element (115) is configured to provide a first illumination system light component (1101), wherein the first illumination system light component (1101) comprises at least a portion of the luminescent material light (201), wherein the first illumination system light component (1101) has a first spectral power distribution, and its spectral intensity is a first wavelength λ 1 a second light source (120), comprising a laser light source (20) configured to generate laser light source light (21), wherein the second light source (120), optionally in combination with a second optical element (125), is configured to provide a second illumination system light component (1201), wherein the second illumination system light component (1201) comprises at least a portion of the laser light source light (21), wherein the second illumination system light component (1201) has a second spectral power distribution different from the first spectral power distribution, and its spectral intensity is a second wavelength λ 2 The spectral intensity of the second wavelength λ 2 Selected from λ 1 ‑30nm≤λ 2 ≤λ 1 +30nm range; ‑control system (30), which is configured to control in one or more control modes according to the first component optical power W of the first lighting system light component (1101). opt,comp1 Control the second component optical power W of the second lighting system light component (1201) opt,comp2 .

Description

Technical Field

[0001] The invention relates to an illumination system. The invention also relates to a projection system or an illumination device comprising such a system. Background Art

[0002] Laser-based illumination systems are known in the art. For example, U.S. Patent 2017 / 0356613 describes a laser illumination system having a first laser light source, a second laser light source, and a light conversion element. The outputs from the first and second laser light sources are directed to the light conversion element, which generates a wavelength-converted light output in response to the excitation of the laser. The first and second laser light sources generate lasers of different wavelengths with different absorption characteristics in the light conversion element, so that the depth ranges of the wavelength-converted light generated in the light conversion element are different. This difference in the converted output can be used to produce different optical effects, thereby enabling beam control or beam shaping.

[0003] US Patent 2018 / 080630A discloses a light emitting device, including a first light source module, the first light source module including a light source for emitting excitation light, a second light source for emitting second light, and a color wheel. The color wheel emits the second light and the first light including at least one beam of excitation light under the illumination of the light source and the second light source. The second light overlaps with at least one beam of excitation light in the first light in spectrum, and simultaneously emits the second light and the excitation light that overlaps with the second light in spectrum.

[0004] US Patent 2015 / 167907A discloses a lighting device, comprising a phosphor, a first laser for irradiating the phosphor with a first laser radiation to produce colored light having a first light color, and a second laser configured to emit a second laser radiation having a second light color, wherein the second light color of the second laser radiation is the same in color as the first light color. The lighting device is configured to simultaneously emit the second laser radiation and the wavelength-converted colored light of the same color emitted by the phosphor. Summary of the invention

[0005] Phosphors can be used to convert (laser) light to produce light. For example, a blue (laser) light source can produce white light using a luminescent material that partially converts blue (laser) light into, for example, yellow light. The luminous flux from the phosphor material can increase linearly with the input power until saturation effects (thermal and / or light-induced) begin to limit the conversion. The temperature of the phosphor and / or the intensity of the light can affect the saturation power level and the conversion efficiency. Therefore, although linear behavior is expected, nonlinear behavior of the spectral power may be perceived.

[0006] Therefore, one aspect of the present invention is to provide an alternative lighting system ("system") which preferably further at least partially obviates one or more of the above disadvantages. It is an object of the present invention to overcome or mitigate at least one disadvantage of the prior art, or to provide a useful alternative.

[0007] In one aspect, the present invention provides an illumination system configured to generate illumination system light. In particular, such a system may include a primary light source based on light conversion of a luminescent material and an auxiliary light source that may be used to compensate for possible nonlinearity of the primary light source. In an embodiment, the illumination system light may include one or more of the following: (i) having a first component light power W opt,comp1 The first lighting system light component ("first light component" or "first component"), and (ii) having a second component light power W opt,comp2 In particular, the lighting system light has an optical power W opt,sys In an embodiment, the optical power W of the lighting system light opt,sys is controllable. Furthermore, in certain embodiments, the lighting system comprises a first light source and a second light source, and in particular in other embodiments, further comprises a control system or is functionally coupled to such a control system. In certain embodiments, the first light source comprises a first pump light source configured to generate a first pump light source light. The lighting system may further comprise a luminescent material configured to convert at least a portion of the first pump light source light into luminescent material light. In certain embodiments, the first light source, optionally in combination with the first optical element, may be configured to provide a first lighting system light component. In particular, the first lighting system light component may comprise at least a portion of the luminescent material light. Furthermore, in particular, the first lighting system light component has a first spectral power distribution, whose spectral intensity is the spectral intensity of the first wavelength λ1. In an embodiment, the first optical power of the first pump light source light is controllable; thereby, the first component optical power W of the first lighting system light component opt,comp1 May be controllable. Furthermore, the second light source may include a laser light source configured to generate laser light source light ("second light source"). In particular, in an embodiment, the second light source, optionally in combination with a second optical element, may be configured to provide a second illumination system light component. In particular, the second illumination system light component may include at least a portion of the laser light source light. Furthermore, in an embodiment, the second illumination system light component may have a second spectral power distribution different from the first spectral power distribution, and its spectral intensity is the spectral intensity of the second wavelength λ2. In particular, in an embodiment, the second wavelength λ2 may be selected from the range of λ1-z1nm≤λ2≤λ1+z1nm, where z1 may be 30 in an embodiment. In a specific embodiment, the second optical power of the laser light source light may be controllable; therefore, the second component optical power W of the second illumination system light component opt,comp2As described above, the lighting system may further comprise a control system, or be functionally coupled to a control system, which control system may in particular be configured to control the first component light power W of the first lighting system light component according to the first component light power W in one or more control modes (of the control system). opt,comp1 To control the second component optical power W of the second lighting system light component opt,comp2 Therefore, in particular, the present invention provides a lighting system configured to generate lighting system light, wherein the lighting system light comprises one or more of the following: (i) having a first component optical power W opt,comp1 A first lighting system light component, and (ii) a second component light power W opt,comp2 a second illumination system light component, wherein in an embodiment, the illumination system comprises: (a) a first light source comprising a first pump light source configured to generate a first pump light source light and a luminescent material configured to convert at least a portion of the first pump light source light into luminescent material light, wherein the first light source optionally combined with a first optical element is configured to provide a first illumination system light component, wherein the first illumination system light component comprises at least a portion of the luminescent material light, wherein the first illumination system light component has a first spectral power distribution, and its spectral intensity is the spectral intensity of a first wavelength λ1; (b) a second light source comprising a first pump light source configured to generate a laser light source that can be combined with a second optical element to form a laser light source light, wherein the second light source optionally combined with a second optical element is configured to provide a second illumination system light component, wherein the second illumination system light component includes at least a portion of the laser light source light, wherein the second illumination system light component can have a second spectral power distribution different from the first spectral power distribution, and its spectral intensity is the spectral intensity of a second wavelength λ2, wherein the second wavelength λ2 can be selected from the range of λ1-30nm≤λ2≤λ1+30nm; and (c) a control system configured to control the light intensity of the first illumination system light component according to the first component light power W of the first illumination system light component in one or more control modes. opt,comp1 To control the second component optical power W of the second lighting system light component opt,comp2 , wherein the control system is further configured to control in the first control mode only a first component light power W above the first lighting system light component opt,comp1 When the predetermined threshold is reached, according to the first component optical power W of the first lighting system light component opt,comp1 To control the second component optical power W of the second lighting system light component opt,comp2 .

[0008] With such a system, it is possible to have a greater range of linear dimming of light output. With such a system, it is also possible to have a relatively high color rendering index (CRI) by using luminescent materials (sometimes also referred to as "phosphors") and reduce the effects of quenching of the second light source while substantially maintaining the color point and CRI. Thus, in certain embodiments, a lighting system with an increased linear dimming range can be used to produce white light based at least on the luminescent materials.

[0009] As described above, the lighting system is configured to generate lighting system light. The term "lighting system light" may particularly refer to light emitted from the lighting system during operation of the lighting system, such as light emitted from a light exit window (or "end window"). The lighting system comprises a first light source, a second light source and a luminescent material. The first light source may comprise a luminescent material.

[0010] During operation of the lighting system, the lighting system light includes one or more of the following: (i) having a first component light power W opt,comp1 A first lighting system light component, and (ii) a second component light power W opt,comp2 The second lighting system light component of W. Optionally, other lighting system light components may also be used (see also below). In this document, the phrase "lighting system light includes one or more of the following: (i) having a first component light power W opt,comp1 A first lighting system light component, and (ii) a second component light power W opt,comp2 "a second lighting system light component" and similar phrases particularly refer to the control mode indicated in this document.

[0011] As mentioned above, it is not excluded that other control modes may be used, wherein the lighting system is configured to generate lighting system light having only one or more other lighting system light components (not the first lighting system light component and the second lighting system light component).

[0012] The phrase "the lighting system light comprises one or more of the following: (i) having a first component light power W opt,comp1 A first lighting system light component, and (ii) a second component light power W opt,comp2 "The second lighting system light component" and similar phrases particularly indicate that in the control mode indicated herein, the lighting system light comprises the first lighting system light component or the second lighting system light component or both. The ratio of these components may, for example, depend on the control mode.

[0013] In an embodiment, the first light source may comprise a first pump light source configured to generate a first pump light source light. In particular, the first light source may comprise a solid-state laser pump light source, but other options are possible (see also below). The term "pump light source" may also refer to a plurality of (different) pump light sources.

[0014] The lighting system (in particular the first light source) may further comprise a luminescent material. The term "luminescent material" may also refer to a plurality of (different) luminescent materials. The luminescent material is configured to convert at least a portion of the light from the first pump light source into luminescent material light. In an embodiment, the luminescent material may be configured to absorb at least 80%, such as at least 90%, such as at least 95%, such as even at least 99% of all pump light sources. Most of them, such as at least 70%, such as at least 80%, such as at least 85% in a particular embodiment, may be converted into luminescent material light. A conversion rate of 85% indicates that the quantum efficiency is substantially 85%. The luminescent material may be configured to be away from the pump light source. However, the luminescent material may also be in optical contact or even physical contact with the pump light source.

[0015] The first light source optionally combined with the first optics is in particular configured to provide the first illumination system light component.In this context, first optics may in particular refer to those optics which have a wavelength-dependent influence on the luminescent material light, like color filters (see also below).

[0016] The first illumination system light component in particular comprises at least a portion of the luminescent material light. For example, at least 70%, such as at least 80%, in particular at least 90%, such as even more in particular at least 95% of the spectral power distribution of the first illumination system light may consist of the luminescent material light. For example, a blue laser light source may provide a blue laser light which is absorbed by a luminescent material (e.g. LuAG (Lu3Al5O 12 :Ce 3+ A first light source comprising a blue laser light source as a pump light source and a luminescent material emitting green light as a luminescent material may provide a first illumination system light component which may consist essentially of green light emitted by LuAG only.

[0017] In particular, the first illumination system light component has a first spectral power distribution having a spectral intensity at a first wavelength λ1. The phrase "spectral intensity at a first wavelength λ1" may also refer to spectral emission with intensities at different wavelengths, such as LuAG. The wavelength λ1 may, for example, refer to a dominant wavelength or a peak wavelength (see also below).

[0018] In certain embodiments, the first optical power of the first pump light source light may be controllable (via a control system). Thus, in an embodiment, the first component optical power W of the first illumination system light component is opt,comp1 Can be controllable.

[0019] The term "first light source" may also refer to a plurality of (different) first light sources. Therefore, the term "first light source" may also refer to "at least one first light source".

[0020] In particular, in the embodiment, it is assumed that the input power (W10 ) and the optical output power of the pump light source (W opt，10 ). Therefore, in particular, there may be a (positive) linear relationship between the dimming of the pump light source and the optical power of the pump light source. The type of positive linear relationship is y=a*x (or y=a*x+b).

[0021] As also described above, the illumination system further comprises a second light source. In an embodiment, the second light source may comprise a laser light source configured to generate laser light source light. In particular, the laser light source is a solid-state laser light source.

[0022] The second light source, optionally in combination with the second optics, may in particular be configured to provide the second illumination system light component. In this context, the second optics may in particular refer to those optics which have a wavelength-dependent effect on the luminescent material light, such as color filters (see also below). Generally speaking, such second optics, if any, may have a small or negligible or essentially zero effect on the laser light source light, since this may be a relatively narrow band (see also below).

[0023] In particular, the second illumination system light component comprises at least a portion of the laser light source light. For example, at least 70%, such as at least 80%, in particular at least 90%, such as even more particularly at least 95%, such as at least 99% of the spectral power distribution of the second illumination system light may consist of the laser light source light.

[0024] In certain embodiments, the second light source may not be based on light conversion using a luminescent material.

[0025] In an embodiment, the second illumination system light component has a second spectral power distribution different from the first spectral power distribution, and its spectral intensity is the spectral intensity of the second wavelength λ2. The phrase "spectral intensity at the second wavelength λ2" may also refer to spectral emission with different wavelength intensities. The wavelength λ2 may, for example, refer to a dominant wavelength or a peak wavelength (see also below). Since the second illumination system light component may consist essentially of laser light source light, in an embodiment the peak wavelength may be substantially the same as the dominant wavelength.

[0026] In a particular embodiment, the second spectral power distribution has a narrowband shape or even a linear shape. In an embodiment, the second spectral power distribution may have a full width at half maximum (FWHM) of a maximum of 50 nm, such as in particular a maximum of 40 nm, such as in an embodiment a maximum of 30 nm, such as in an embodiment a maximum of 20 nm. Typically, the FWHM may be equal to or less than 30 nm, such as equal to or less than 10 nm, such as a maximum of 5 nm, a maximum of about 2 nm.

[0027] The second spectral power distribution is different from the first spectral power distribution. In an embodiment, this may mean that the first spectral power distribution overlaps with the second spectral power distribution only by a maximum of 20%, such as a maximum of 10%, or that the second spectral power distribution overlaps with the first spectral power distribution only by a maximum of 20%, such as a maximum of 10%. In an embodiment, the spectral overlap may be at least 0.1%, such as at least 1%, such as at least 2%.

[0028] Although the second spectral power distribution is different from the first spectral power distribution, in particular the second wavelength λ2 is selected from the range of λ1-30nm≤λ2≤λ1+30nm. For example, the peak maximum or the dominant wavelength may be relatively the same, or even substantially the same. In an embodiment, λ1-20nm≤λ2≤λ1+20nm; even more particularly λ1-10nm≤λ2≤λ1+10nm. In other specific embodiments, 0.92≤λ2 / λ1≤1.08, for example 0.94≤λ2 / λ1≤1.06, and in particular 0.96≤λ2 / λ1≤1.04.

[0029] Alternatively or additionally, the first illumination system light component and the second illumination system light component may have substantially the same color point. The color points may be the same or substantially the same when the difference in x and / or y of the color point (CIE 1931) is equal to or less than 0.1, such as equal to or less than 0.05, even more particularly equal to or less than 0.02. In particular, the difference in the x-value and / or y-value is not greater than 0.05, such as not greater than 0.02. Thus, the color points 0.5; 0.4 and 0.45; 0.35 may still be considered to be the same color point.

[0030] As described above, the second optical power of the laser light source light may (also) be controllable. Thus, the second optical power W of the second illumination system light component opt,comp2 can (therefore) be controllable.

[0031] In addition, since the first component optical power W of the first lighting system light component opt,comp1 can be controllable, and the second optical power of the laser light source light can also be controllable, so the optical power W of the illumination system light opt,sys As mentioned above, the first component optical power W opt,comp1 The possible nonlinearity in the second component optical power W can be opt,comp2 Compensation, whereby the lighting system light W opt,sys The total linear dimming range can be larger. The term "light power" refers to the power (in Watts) of the spectral power distribution, such as the power of the first lighting system light component, the second lighting system light component, or the lighting system light (as a whole). Therefore, the light power W of the lighting system light opt,sys Can be controllable.

[0032] The term "second light source" may also refer to a plurality of (different) second light sources. For example, two or more laser light sources may provide laser light source light to an optical fiber, and the tip of the optical fiber may provide laser light source light (or second light source light). Therefore, the term "second light source" may also refer to "at least one second light source".

[0033] In particular, in the embodiment, it is assumed that the input power (W 20 ) and the optical output power (W) of the laser light source opt，20 ). Therefore, in particular, there may be a (positive) linear relationship between the dimming of the laser light source and the optical power of the laser light source light.

[0034] In particular, W opt,comp1 and W opt,comp2 It is thus possible to relate to the light component of the illumination system light. The two light components with their respective light powers are in particular provided by at least phosphor light and laser light source light, respectively.

[0035] Furthermore, the lighting system may comprise a control system. In particular, the control system is configured to control the first component light power W of the first lighting system light component in one or more control modes according to the first component light power W of the first lighting system light component. opt,comp1 Control the second component optical power W of the second lighting system light component opt,comp2 Hence, the control system may provide one or more control modes of controlling the lighting system, more particularly the lighting system light, even more particularly the (ratio of) the first lighting system light component and the second lighting system light component.

[0036] For example, in one or more control modes, the 10 , W opt,10 , W opt,sys and W opt,comp1 One or more of the second lighting system light components to control the second component light power W opt,comp2 .W opt,sys May (indirectly) depend on W opt,comp1 .W opt,comp1 Can (directly) depend on W 10 or W opt,10 .W opt,10 Can rely on W 10 .

[0037] The term "control" and similar terms particularly refer to at least determining the behavior of an element or supervising the operation of an element. Therefore, in this article, "control" and similar terms may, for example, refer to imposing behavior on an element (determining the behavior or supervising the operation of an element), such as measuring, displaying, starting, opening, moving, changing temperature, etc. In addition, the term "control" and similar terms may also include monitoring. Therefore, the term "control" and similar terms may include imposing behavior on an element, or may impose behavior on an element and monitor the element. An element may be controlled by a control system, which may also be represented as a "controller". Therefore, the control system and the element may be functionally coupled at least temporarily or permanently. The element may include a control system. In an embodiment, the control system and the element may not be physically coupled. Control may be performed by wired and / or wireless means. The term "control system" may also refer to a plurality of different control systems, which are particularly functionally coupled, and wherein, for example, one control system may be a master control system, and one or more other control systems may be slave control systems. The control system may include a user interface or may be functionally coupled to a user interface.

[0038] The control system may also be configured to receive and execute instructions from a remote control. In an embodiment, the control system may be controlled by an APP on a device (e.g. a portable device such as a smartphone or i-phone, a tablet, etc.). Thus, the device does not have to be coupled to the lighting system, but may be (temporarily) functionally coupled to the lighting system.

[0039] Therefore, in an embodiment, the control system may (also) be configured to be controlled by an APP on a remote device. In such an embodiment, the control system of the lighting system may be a slave control system or be controlled in slave mode. For example, the lighting system may be identified by a code, in particular a unique code for each lighting system. The control system of the lighting system may be configured to be controlled by an external control system, which accesses the lighting system based on knowledge of the (unique) code (input by a user interface with an optical sensor (e.g. a QR code reader)). The lighting system may also include means for communicating with other systems or devices, for example based on Bluetooth, WIFI, LiFi, ZigBee, BLE or WiMAX or other wireless technologies.

[0040] A system, device or apparatus may perform an action in a "mode" or "mode of operation" or "mode of operation". Likewise, in a method, an action or a phase or step may be performed in a "mode" or "mode of operation" or "mode of operation". The term "mode" may also be expressed as a "control mode". This does not exclude that the system, device or apparatus may also be adapted to provide another control mode or a plurality of other control modes. Likewise, this does not exclude that one or more other modes may be performed before and / or after the execution of a mode.

[0041] However, in an embodiment, a control system may be available, which is adapted to provide at least a control mode. If other modes are available, these may in particular be selected via a user interface, however other options are also possible, such as executing a mode depending on a sensor signal or a (time) scheme. In an embodiment, an operating mode may also refer to a system, device or apparatus that can only be operated in a single operating mode (i.e. "on", without further adjustability).

[0042] Therefore, in an embodiment, the control system may be controlled according to one or more of an input signal of a user interface, a sensor signal (of a sensor), and a timer. The term "timer" may refer to a clock and / or a predetermined timing scheme.

[0043] As described above, the lighting system can be controlled according to one or more control modes. The one or more control modes are particularly based on the invention, that is, in one or another way, according to the first component light power W of the first lighting system light component. opt,comp1 To control the second component optical power W of the second lighting system light component opt,comp2 . However, in other embodiments, the control system may also be configured to control the light of the lighting system according to one or more other control modes. Therefore, the phrase "configured to control in one or more control modes (of the control system)" and similar phrases may specifically indicate that the control system controls the lighting system according to one or more control modes. The phrase "control in one or more control modes" generally means that there is at least one control mode; there may also be more control modes for the control system to control (the lighting system). In addition, generally during operation, a single operating mode may be adopted. Another (second) control mode may be selected from a subset of two or more control modes after (or before) selecting a (first) control mode, but generally not simultaneously.

[0044] In one or more control modes, the control system may be configured to maintain the color point of the combination of the first lighting system light component and the second lighting system light component within a predetermined range, such as within + / -0.05 of the predetermined color point, such as within + / -0.025 of the predetermined color point, such as within 0.01 of the predetermined color point. In particular, the control system may be configured to maintain the color point of the combination of the first lighting system light component and the second lighting system light component within + / -0.025 of the predetermined color point, such as within 0.01 of the predetermined color point. Thus, the color point may remain substantially the same when only the first lighting system light component or only the second lighting system light component is available, or when both the first lighting system light component and the second lighting system light component are available. Thus, the x-value and / or y-value may differ by + / -0.025 relative to the predetermined color point (in embodiments where the control system is configured to maintain the color point of the combination of the first lighting system light component and the second lighting system light component within + / -0.025 of the predetermined color point). It should be noted that the color point in these embodiments is now defined relative to the first and second lighting system light components and not relative to the lighting system light. If the lighting system light consists essentially only of the first and second lighting system light components, this also applies to the color point of the lighting system light.

[0045] Alternatively or additionally, the control system may be configured to maintain the dominant wavelength of the combination of the first illumination system light component and the second illumination system light component within a predetermined range, such as within + / -10 nm of the predetermined dominant wavelength, such as within + / -5 nm of the predetermined dominant wavelength, such as within 2.5 nm of the predetermined dominant wavelength. In particular, the control system may be configured to maintain the dominant wavelength of the combination of the first illumination system light component and the second illumination system light component within + / -5 nm of the predetermined dominant wavelength, such as within 2.5 nm of the predetermined dominant wavelength. Thus, when only the first illumination system light component or only the second illumination system light component, or both the first illumination system light component and the second illumination system light component are available, the dominant wavelength may remain substantially the same. Thus, the wavelength may differ by + / -5 nm relative to the predetermined dominant wavelength (in embodiments where the control system is configured to maintain the dominant wavelength of the combination of the first illumination system light component and the second illumination system light component within + / -5 nm of the predetermined dominant wavelength). It should be noted that the dominant wavelength in these embodiments is now defined relative to the first illumination system light component and the second illumination system light component rather than relative to the illumination system light.

[0046] If the illumination system light consists essentially only of the first illumination system light component and the second illumination system light component, this also applies to the dominant wavelength of the illumination system light.

[0047] The term "light source" may refer to a semiconductor light emitting device, such as a light emitting diode (LED), a resonant cavity light emitting diode (RCLED), a vertical cavity laser diode (VCSEL), an edge emitting laser, etc. The term "light source" may also refer to an organic light emitting diode, such as a passive matrix (PMOLED) or an active matrix (AMOLED). In a specific embodiment, the light source comprises a solid-state light source (such as an LED or a laser diode). In one embodiment, the light source comprises an LED (light emitting diode). The term LED may also refer to a plurality of LEDs. In addition, the term "light source" may also refer to a so-called chip-on-board (COB) light source in an embodiment. The term "COB" refers in particular to an LED chip in the form of a semiconductor chip, which is neither packaged nor connected, but is directly mounted on a substrate, such as a PCB. Therefore, a plurality of semiconductor light sources may be configured on the same substrate.

[0048] In an embodiment, a COB is a multi-LED chip configured together as a single lighting module. The term "light source" may also refer to multiple (substantially the same (or different)) light sources, such as 2-2000 solid-state light sources. In an embodiment, the light source may include one or more micro-optical elements (micro-lens arrays) located downstream of a single solid-state light source (e.g., an LED) or downstream of multiple solid-state light sources (e.g., shared by multiple LEDs). In an embodiment, the light source may include an LED with on-chip optics. In an embodiment, the light source includes a pixelated single LED (with or without optics) (on-chip beam control is provided in an embodiment).

[0049] The phrase "different light sources" or "multiple different light sources" and similar phrases may refer to multiple solid-state light sources selected from at least two different bins in an embodiment. Likewise, in an embodiment, the phrase "same light source" or "multiple same light sources" and similar phrases may refer to multiple solid-state light sources selected from the same bin.

[0050] Of course, the term "laser light source" and similar terms refer to a light source that includes a laser for directly or indirectly generating source light. As described above, the second illumination system light component may consist essentially of laser light source light. Thus, the laser light source is configured to generate source light directly (essentially without downstream conversion (via luminescent material)).

[0051] In this context, when a laser is used, the laser may particularly include a solid-state laser.

[0052] The terms "upstream" and "downstream" relate to the arrangement of items or features relative to the propagation of light from a light generating device (particularly a light source in this context), wherein, relative to a first position within a light beam from the light generating device, a second position in the light beam that is closer to the light generating device is "upstream" and a third position in the light beam that is farther from the light generating device is "downstream".

[0053] The luminescent material is in particular arranged downstream of the first pump light source; the first pump light source is (therefore) arranged upstream of the luminescent material.

[0054] In particular, the luminescent material and the first pump light source are arranged in a transmission configuration, i.e. the first pump light source light enters the luminescent material on one side of the luminescent material and part of the first pump light source light escapes on the other side of the luminescent material. In an embodiment, the luminescent material is provided as a luminescent material layer, for example a luminescent material comprising a coating or a luminescent material comprising a body. In an embodiment, the luminescent material is included in a ceramic body or a polymer body. The luminescent material can, for example, be dispersed or uniformly distributed in the ceramic body or the polymer body. In other embodiments, the luminescent material can be provided as a ceramic body, for example in the case of a garnet-based system (see also below). Therefore, in an embodiment, the radiation input surface can be opposite to the radiation exit surface, which is particularly true in a transmission configuration. However, in other embodiments, the radiation input surface and the radiation exit surface can be the same (surface) surface, which is particularly true in a reflection configuration. Therefore, in an embodiment, a reflection configuration is also possible.

[0055] The term "luminescent material" refers in particular to a material which is able to convert a first radiation, in particular one or more of UV radiation and blue radiation, into a second radiation. Typically, the first radiation and the second radiation have different spectral power distributions. Therefore, instead of the term "luminescent material", the term "luminescent converter" or "converter" may also be applied. Typically, the wavelength of the spectral power distribution of the second radiation is larger than the first radiation, which is a so-called down-conversion case. However, in certain embodiments, the wavelength of the spectral power distribution of the second radiation is smaller than the first radiation, which is a so-called up-conversion case.

[0056] In embodiments, a "luminescent material" may refer in particular to a material capable of converting radiation into, for example, visible light and / or infrared light. For example, in embodiments, a luminescent material may be capable of converting one or more of UV radiation and blue radiation into visible light. In certain embodiments, the luminescent material may also convert radiation into infrared radiation (IR). Thus, upon excitation with radiation, the luminescent material emits radiation. Typically, the luminescent material will be a down converter, i.e., converting radiation of a smaller wavelength into radiation of a larger wavelength (λ). ex <λ em ), however, in certain embodiments, the luminescent material may include a down-converter luminescent material, ie, converting radiation of a larger wavelength into radiation of a smaller wavelength (λ ex >λ em ).

[0057] In an embodiment, the term "luminescence" may refer to phosphorescence. In an embodiment, the term "luminescence" may also refer to fluorescence. Instead of the term "luminescence", the term "emission" may also be applied. Therefore, the terms "first radiation" and "second radiation" may refer to excitation radiation and emission (radiation), respectively.

[0058] The term "luminescent material" may also refer to a plurality of different luminescent materials. Examples of possible luminescent materials are shown below.

[0059] In an embodiment, the luminescent material is selected from garnets and nitrides, in particular doped with trivalent cerium or divalent europium, respectively. Examples of garnets in particular include A3B5O 12 Garnet, wherein in an embodiment A comprises one or more of Y, La, Gd, Tb and Lu, in particular one or more of (at least) Y, Gd, Tb and Lu, even more in particular, wherein A comprises at least yttrium or lutetium, and wherein in an embodiment B comprises one or more of Al, Ga, In and Sc. In particular, A may comprise one or more of Y, Gd and Lu, such as in particular one or more of Y and Lu. In particular, B may comprise one or more of Al and Ga, more in particular at least Al, such as substantially all Al. Such garnet may be doped with cerium (Ce), praseodymium (Pr) or a combination of cerium and praseodymium; however, in particular in the case of Ce. In particular, B comprises aluminum (Al), however, B may also partially comprise gallium (Ga) and / or scandium (Sc) and / or indium (In), in particular up to about 20% Al, more in particular up to about 10% Al (i.e., the B ions are essentially composed of 90 mol % or more Al and 10 mol % or less of one or more of Ga, Sc and In); B may in particular comprise up to about 10% gallium. In another variant, B and O may be at least partially replaced by Si and N. The element A may in particular be selected from yttrium (Y), gadolinium (Gd), terbium (Tb) and lutetium (Lu). Furthermore, the content of Gd and / or Tb is in particular at most only about 20% of A. In a specific embodiment, the garnet luminescent material comprises (Y 1-x Lu x )3B5O 12 :Ce, where x is equal to or greater than 0 and equal to or less than 1.

[0060] The term ":Ce" means that part of the metal ions in the luminescent material (i.e., part of the "A" ions in garnet) are replaced by Ce. 1-x Lu x )3Al5O 12:In the case of Ce, part of Y and / or Lu is replaced by Ce. This is known to those skilled in the art. Generally, Ce will replace no more than 10% of A; usually, the concentration of Ce will be in the range of 0.1 to 4%, especially 0.1 to 2% (relative to A). Assuming 1% of Ce and 10% of Y, the completely correct formula can be (Y 0.1 Lu 0.89 Ce 0.01 )3Al5O 12 .

[0061] As is known to those skilled in the art, Ce in garnet is substantially or only trivalent.

[0062] In an embodiment, the first luminescent material thus includes A3B5O 12 , where in a particular embodiment, up to 10% of B-O can be replaced by Si-N.

[0063] In a particular embodiment, the luminescent material includes (Y x1-x2-x3 A’ x2 Ce x3 )3(Al y1-y2 B’ y2 )5O 12 , where x1 + x2 + x3 = l, where x3 > 0, where 0 < x2 + x3 ≤ 0.2, where y1 + y2 = l, where 0 < y2 ≤ 0.2, where A’ includes one or more elements selected from the lanthanide elements, and where B’ includes one or more elements selected from Ga, In, and Sc. In an embodiment, x3 is selected from the range of 0.001 - 0.1. In the present invention, in particular, x1 > 0, such as > 0.2, such as at least 0.8. The Y-containing garnet can provide a suitable spectral power distribution.

[0064] In a particular embodiment, up to 10% of B-O can be replaced by Si-N. Herein, B in B-O refers to one or more of Al, Ga, In, and Sc (and O represents oxygen); in a particular embodiment, B-O can refer to Al-O.

[0065] As described above, in a particular embodiment, x3 can be selected from the range of 0.001 - 0.04. In particular, such a luminescent material can have a suitable spectral distribution (however, see below), have a relatively high efficiency, have a relatively high thermal stability, and allow a high CRI (in combination with the first light source light and the second light source light (and the filter)).

[0066] In a particular embodiment, A can be selected from Lu and Gd. Alternatively or additionally, B can include Ga. Thus, in an embodiment, the luminescent material includes (Y x1-x2-x3 (Lu,Gd)x2 Ce x3 )3(Al y1-y2 Ga y2 )5O 12 , wherein Lu and / or Gd may be available. More particularly, x3 is selected from the range of 0.001 - 0.1, wherein 0 < x2 + x3 ≤ 0.1, and wherein 0 ≤ y2 ≤ 0.1. Further, in a particular embodiment, up to 1% of B - O may be replaced by Si - N. Herein, percentages refer to moles (as known in the art); see also, for example, EP3149108. In yet another particular embodiment, the luminescent material comprises (Y x1-x3 Ce x3 )3Al5O 12 , wherein x1 + x3 = l, and wherein 0 < x3 ≤ 0.2, for example 0.001 - 0.1.

[0067] In a particular embodiment, the light - generating device may only comprise a luminescent material selected from the cerium - containing garnet type. In other particular embodiments, the light - generating device comprises a single type of luminescent material, such as (Y x1-x2-x3 A’ x2 Ce x3 )3(Al y1-y2 B’ y2 )5O 12 . Thus, in a particular embodiment, the light - generating device comprises a luminescent material, wherein at least 85 wt%, even more particularly at least about 90 wt%, for example even more particularly at least about 95 wt% of the luminescent material comprises (Y x1-x2-x3 A’ x2 Ce x3 )3(Al y1- y2 B’ y2 )5O 12 . Herein, wherein A’ comprises one or more elements selected from the lanthanide elements, and wherein B’ comprises one or more elements selected from Ga, In, and Sc, wherein x1 + x2 + x3 = l, wherein x3 > 0, wherein 0 < x2 + x3 ≤ 0.2, wherein yl + y2 = l, wherein 0 ≤ y2 ≤ 0.2. In particular, x3 is selected from the range of 0.001 - 0.1. It should be noted that in an embodiment x2 = 0. Alternatively or additionally, in an embodiment y2 = 0.

[0068] In a particular embodiment, A may particularly comprise at least Y, and B may particularly comprise at least Al.

[0069] In an embodiment, the red light emitting material may include a material selected from one or more of the following: (Ba, Sr, Ca) S: Eu, (Ba, Sr, Ca) AlSiN3: Eu, and (Ba, Sr, Ca) 2Si5N8: Eu:. In these compounds, europium (Eu) is substantially or exclusively divalent and replaces one or more divalent cations shown. Generally, the content of Eu will not exceed 10% of the cations; the content of Eu is particularly in the range of about 0.5-10%, more particularly in the range of about 0.5-5%, relative to the cations it replaces. The term ": Eu" means that part of the metal ion is replaced by Eu (in these examples, Eu 2+ ) is substituted. For example, assuming that CaAlSiN3:Eu contains 2% Eu, the correct formula would be (Ca 0.98 Eu 0.02 )AlSiN3. The divalent europium will usually replace a divalent cation, such as the above-mentioned divalent alkaline earth metal cations, in particular Ca, Sr or Ba.

[0070] The material (Ba, Sr, Ca) S: Eu can also be expressed as MS: Eu, wherein M is one or more elements selected from barium (Ba), strontium (Sr) and calcium (Ca); in particular, in the compound, M includes calcium or strontium, or calcium and strontium, more particularly calcium. Herein, Eu is introduced and replaces at least a portion of M (i.e., one or more of Ba, Sr and Ca).

[0071] In addition, the material (Ba, Sr, Ca) 2 Si 5 N 8 : Eu can also be expressed as M 2 Si 5 N 8 : Eu, wherein M is one or more elements selected from barium (Ba), strontium (Sr) and calcium (Ca); in particular, the compound contains Sr and / or Ba. In other specific embodiments, M consists of Sr and / or Ba (ignoring the presence of Eu), in particular 50-100%, more particularly 50-90% Ba and 50-0%, in particular 50-10% Sr, for example Ba 1.5 Sr 0.5 Si5N8:Eu (ie, 75% Ba; 25% Sr). Here, Eu is introduced and replaces at least a portion of M (ie, one or more of Ba, Sr and Ca).

[0072] Similarly, the material (Ba, Sr, Ca) AlSiN3: Eu can also be expressed as MAlSiN3: E, where M is one or more elements selected from barium (Ba), strontium (Sr) and calcium (Ca); in particular, in this compound, M includes calcium or strontium, or calcium and strontium, more particularly calcium. In this article, Eu is introduced and replaces at least a portion of M (i.e., one or more of Ba, Sr and Ca).

[0073] As known to those skilled in the art, Eu in the above-mentioned luminescent materials is substantially or only in a divalent state.

[0074] The term "luminescent material" in this context relates in particular to inorganic luminescent materials, which are sometimes also referred to as phosphors. These terms are known to the person skilled in the art.

[0075] Alternatively or additionally, other luminescent materials may also be applied. For example, quantum dots and / or organic dyes may be applied and may optionally be embedded in a transmissive matrix, such as a polymer, such as PMMA or polysiloxane.

[0076] Quantum dots are small crystals of semiconductor materials, and their width or diameter is usually only a few nanometers. When excited by incident light, the color of the light emitted by the quantum dots is determined by the size and material of the crystal. Therefore, light of a specific color can be produced by adjusting the size of the dots. Most of the known quantum dots that emit in the visible light range are based on cadmium selenide (CdSe), and their shells are such as cadmium sulfide (CdS) and zinc sulfide (ZnS). Cadmium-free quantum dots, such as indium phosphide (InP), and copper indium sulfide (CuInS2) and / or silver indium sulfide (AglnS2) can also be used. The emission band shown in quantum dots is very narrow, so it shows a saturated color. In addition, by adjusting the size of the quantum dots, the emission color can be easily adjusted. Any type of quantum dots known in the art can be used in the present invention. However, for environmental safety and consideration reasons, it is preferred to use cadmium-free quantum dots or at least quantum dots with very low cadmium content.

[0077] Instead of or in addition to quantum dots, other quantum confinement structures may also be used. In the context of this application, the term "quantum confinement structure" should be understood as, for example, quantum wells, quantum dots, quantum rods, tripods, tetrapods or nanowires.

[0078] Organic phosphors may also be used. Examples of suitable organic phosphor materials are organic luminescent materials based on perylene derivatives, such as those available from BASF under the trade name Examples of suitable compounds include, but are not limited to, Red F305, Orange F240, Yellow F083 and F170.

[0079] The luminescent material is particularly configured to be in a substantially static configuration relative to the first pump light source. Thus, during use of the device, the first pump light source and the luminescent material do not substantially move relative to each other. However, in other embodiments, the luminescent material may be included in the moving element (e.g., a phosphor wheel). In such embodiments, the luminescent material may be moved relative to the first pump light source.

[0080] When the first pump light source is used to pump the luminescent material, its maximum intensity may be higher than the maximum intensity of the second light source. However, this is not necessarily the case. In an embodiment, the first pump light source has a maximum first optical power W opt,10,max , and the laser light source has a maximum second optical power W opt,20,max , wherein the second optical power of the laser light source and the first optical power of the first pump light source have a ratio WR opt,max In certain embodiments, WR opt,max＝ W opt,20,max / W opt,10,max , where 0.001≤W opt,20,max / W opt,10,max ≤5, such as 0.001≤W opt,20,max / W opt,10,max ≤2. In the embodiment, 0.01≤W opt,20,max / W opt,10,max ≤2, for example, in particular 0.01≤W opt,20,max / W opt,10,max ≤1. In a specific embodiment, W opt,20,max / W opt,10,max ≤1, such as 0.02≤W in the embodiment opt,20,max / W opt,10,max ≤0.5.

[0081] In a particular embodiment, the first spectral power distribution is band-shaped. In an embodiment, the first spectral power distribution may have a full width at half maximum (FWHM) of at least 40 nm, such as in particular at least 50 nm, such as in particular 75 nm, such as in an embodiment at least 100 nm. Typically, the FWHM may be equal to or less than 200 nm, such as equal to or less than 150 nm. Furthermore, in a particular embodiment, the first wavelength λ1 may be the dominant wavelength (of the first illumination system light component). Thus, when the second wavelength is, for example, the peak maximum and / or the dominant wavelength, the color point is not necessarily shifted when quenching of the luminescent material light is compensated by increasing the laser light source light.

[0082] On CIE color coordinate space, a straight line drawn between a point for a given color and a point for the color of an illuminant can be extrapolated so that it intersects the perimeter of the space at two points. The point of intersection that is closer to the color in question reveals the dominant wavelength of that color as the wavelength of the pure spectral color at that intersection point. The point of intersection on the opposite side of the color space gives the complementary wavelength, which, when added to the color in question in the correct proportion, will produce the color of the illuminant (since, by the definition just given, the point of the illuminant must lie between these points on the straight line in CIE space).

[0083] In a specific embodiment, the first light source can be based on, for example, a light source of the high lumen density (HLD) type. Therefore, in an embodiment, the first light source comprises a plurality of first pump light sources and a (long) luminescent polymer, wherein the plurality of first pump light sources are configured to illuminate a radiation input surface included in the side of the (long) luminescent polymer with light from the first pump light source, and wherein the (long) luminescent polymer is configured to provide luminescent material light emitted from a radiation exit surface included in the end face of the (long) luminescent polymer. Instead of the term "luminescent polymer", the term "photopolymer" can also be applied. The polymer comprises a light-transmitting body. In particular, the photopolymer is described with respect to an elongated light-transmitting body (e.g., a ceramic rod or crystal, such as a single crystal). However, these aspects may also be related to other shaped ceramic bodies or single crystals. In a specific embodiment, the luminescent body comprises a ceramic body or a single crystal. The light-transmitting body can have any shape, such as a beam (or rod) shape or a rod shape, but in particular a beam shape (rectangular parallelepiped shape). However, the light-transmitting body can also be in the shape of a disk or the like. The light-transmitting body (such as a light-emitting polymer) may be hollow, like a tube, or may be filled with another material, such as a tube filled with water or a tube filled with another solid light-transmitting medium. The present invention is not limited to embodiments of a specific shape, nor to embodiments with a single exit window or external coupling surface. Below, some specific embodiments are described in more detail. If the light-transmitting body has a circular cross-section, then the width and height may be equal (and may be defined as a diameter). However, in particular, the light-transmitting body has a rectangular parallelepiped shape, such as a rod, and is further configured to provide a single exit window. In a specific embodiment, the light-transmitting body may in particular have an aspect ratio greater than 1, i.e. the length is greater than the width. Typically, the light-transmitting body is a rod, a bar (beam) or a rectangular plate, however the light-transmitting body does not necessarily have a square, rectangular or circular cross-section. In general, the light source is configured to illuminate one (or more) of the longer faces (side edges), indicated herein as the radiation input face, and the radiation escapes from the face at the front (front edge), indicated herein as the radiation exit window. The light source may provide radiation to one or more side faces and optionally the end faces. Therefore, there may be more than one radiation input surface. Furthermore, in general, the light-transmitting body comprises two essentially parallel surfaces, namely the radiation input surface and an opposite surface opposite thereto. These two surfaces define the width of the light-transmitting body. Typically, the length of these surfaces defines the length of the light-transmitting body. However, as described above and as described below, the light-transmitting body may have any shape and may also comprise a combination of shapes. In particular, the radiation input surface has a radiation input surface area (A), wherein the radiation exit window has a radiation exit window area (E), and wherein the radiation input surface area (A) is at least 1.5 times larger than the radiation exit window area (E), even more particularly at least twice, in particular at least 5 times larger, for example in the range of 2-50,000 times, in particular 5-5,000 times.Thus, in particular, the elongated light-transmitting body comprises a geometric concentration factor, defined as the ratio of the area of ​​the radiation input face to the area of ​​the radiation exit window, of at least 1.5, for example at least 2, similar to at least 5, or more (see above). This allows, for example, the use of multiple solid-state light sources (see also below). In a particular embodiment, the radiation exit window makes an angle α with the radiation input face that is not equal to 0° and not equal to 180°, for example an angle α of 90°. Furthermore, in a particular embodiment, the radiation exit window makes an angle with one or more of the one or more side faces that is not equal to 0° and not equal to 180°, for example an angle of 90°. Furthermore, in an embodiment, the radiation exit window makes an angle (α) with the radiation input face that is not equal to 0° and not equal to 180°. Furthermore, in an embodiment, the radiation exit window makes an angle with one or more of the one or more side faces, in particular all side faces, that is not equal to 0° and not equal to 180°. Please note that the angle α may be different for different side faces. For example, the inclined radiation exit window of the rod-shaped elongated body can be at an angle α1 to the first side, at an angle α2=180°-α1 to the second side, and at an angle of 90° to the other two sides. For typical applications such as automotive, digital projector or high brightness spotlight applications, a small but high radiation flux or high luminous flux emission surface is required. This cannot be obtained with a single LED, but can be obtained with the light generating device of the present invention. In particular, the radiation exit window area (E) of the radiation exit window is selected from 1-100 mm. 2 range. With such dimensions, the emitting surface can be small, while still obtaining high radiation or brightness. As mentioned above, the light-transmitting body generally has an aspect ratio (length / width). This allows a small radiation exit surface but a large radiation input surface, for example for illumination with multiple solid-state light sources. In a particular embodiment, the width (W) of the light-transmitting body is selected from the range of 0.5-100 mm, for example 0.5-10 mm. Thus, the light-transmitting body has in particular an integral body of the faces shown herein. In yet another embodiment, the elongated light-transmitting body (of the light-emitting polymer) comprises an elongated ceramic body. For example, Ce doped 3+ (trivalent cerium) luminescent ceramic garnets can be used to convert blue light into longer wavelength light, for example in the green to red wavelength range, for example in the range of about 500-750nm, or even in the cyan range. In order to obtain sufficient absorption and light output in the desired direction, it is advantageous to use transparent rods (especially substantially shaped as beams). Such rods can be used as photopolymerizers, converting light from the source into converter radiation and providing (a large amount of) (polymerized) converter radiation at the exit surface. Projector applications may focus on light generating devices based on photopolymerizers. For projectors, red, yellow, green and blue luminescent polymerizers may be of interest. Green and / or yellow luminescent rods based on garnet may be relatively effective. Such polymerizers are especially based on YAG:Ce (i.e. Y3Al5O 12 :Ce 3+) or LuAG, which can be expressed as (Y 1-x Lu x )3Al5O 12 :Ce 3+ , where 0≤x≤l, for example, Lu3Al5O 12 :Ce 3+ . "Red" garnets can be made by doping YAG-garnet with Gd ("YGdAG"). Cyan emitters can be made by replacing (part of) Al (e.g. in LuAG) with Ga (to give "LuGaAG"). Blue-emitting polymers can be based on YSO (Y2SiO5:Ce 3+ ) or similar compounds or BAM (BaMgAl 10 O 17 :Eu 2+ ) or a similar compound, in particular configured as a single crystal. The term "similar compound" refers in particular to a compound having the same crystal structure but in which one or more cations are at least partially replaced by another cation (for example, Y is replaced by Lu and / or Gd, or Ba is replaced by Sr). Optionally, anions or cation-anion combinations can also be at least partially replaced, for example replacing at least a portion of Al-O with Si-N. Therefore, in particular, the elongated light-transmitting body comprises a ceramic material, which is configured to convert at least part of the (blue) light source light wavelength into converter radiation of one or more of, for example, green, yellow and red, which converter radiation escapes at least partially from the radiation exit window. In an embodiment, the ceramic material in particular comprises A3B5O 12 :Ce 3+ Ceramic material ("ceramic garnet"), wherein A comprises yttrium (Y) and / or lutetium (Lu) and / or gadolinium (Gd), and wherein B comprises aluminum (Al) and / or gallium (Ga), in particular at least Al. As further indicated below, A may also refer to other rare earth elements, and B may comprise only Al, but may also optionally comprise gallium. Formula A3B5O 12 :Ce 3+ The chemical formula is specifically indicated, i.e. the stoichiometric ratio (3:5:12) of the different types of elements A, B and O. However, as is known in the art, the compounds represented by this formula may also optionally include small deviations from the stoichiometry. In particular with regard to polymerizers, further reference is made to WO 2006 / 054203.

[0084] Alternatively or additionally, in an embodiment, the first light source may comprise a solid-state laser light source. Thus, in particular the laser light source comprises a solid-state laser light source. From the above it can be derived that the term "solid-state laser light source" may also refer to a plurality of (different) solid-state laser light sources.

[0085] The best results can be obtained when the first illumination system light component and the second illumination system light component have substantially the same color point. Thus, the peak wavelength or the dominant wavelength, respectively, can be substantially the same. Thus, in a particular embodiment, the second wavelength λ2 can in particular be selected from the range λ1-10nm≤λ2≤λ1+10nm. In particular, both λ1 and λ2 are selected as peak wavelengths. Alternatively, λ1 and λ2 are selected as dominant wavelengths.

[0086] Since only the first component optical power W of the first lighting system light component opt,comp1 Quenching may occur at a specific value of , so in the embodiment, only the first component optical power W of the first illumination system light component where quenching occurs opt,comp1 It may be useful to introduce the second lighting system light component at a value (or above) of . Therefore, in an embodiment, the control system may be configured to, in the (first) control mode, only introduce the first component light power W above the first lighting system light component. opt,comp1 When the predetermined threshold is reached, according to the first component optical power W of the first lighting system light component opt,comp1 To control the second component optical power W of the second lighting system light component opt,comp2 Therefore, the first component light power W is lower than the first lighting system light power W opt,comp1 When the predetermined threshold of the second lighting system light component is less than , the second lighting system light component may be substantially absent. Alternatively, when the first component light power W is lower than the first lighting system light component opt,comp1 When the predetermined threshold value is reached, the light component of the second lighting system may be relatively low, for example, W opt,comp1 The threshold value is W opt,10,max However, the threshold is about W opt,10,max 70% is also possible. opt,comp2 Can be relatively low or even below W opt,comp1 In such embodiments where a certain threshold does not exist, relatively high quality light can be achieved at lower brightness values, for example in terms of CRI.

[0087] Thus, in an embodiment, the first pump light source may have a first dimming range across which the first pump light source can be dimmed brighter and dimmed, wherein across a first portion of the first dimming range, a dimming level within the first portion of the first dimming range and a first component optical power W of the first lighting system light component opt,comp1 There is a linear relationship between the dimming level within the second portion of the first dimming range and the first component optical power W of the first lighting system light component across the second portion of the first dimming range. opt,comp1 There is a nonlinear (positive) relationship between and . Therefore, when the power of the pump light source is increased (in watts), the first component optical power W of the first illumination system light componentopt,comp1 The term "positive" indicates an increase or decrease in power, which is also the first component light power W of the first lighting system light component, respectively. opt,comp1 It should be noted that when the power of the pump light source is reduced (in watts), the first component optical power W of the first illumination system light component opt,comp1 It decreases linearly across the first dimming range and may decrease non-linearly across the second portion.

[0088] Furthermore, the laser light source may include a dimming range, denoted as a second dimming range, across which the laser light source can be dimmed. In particular, within the dimming range of the laser light source, the second component optical power W of the second illumination system light component is opt,comp2 Can be increased (brightened) or decreased (darkened) essentially linearly.

[0089] As used herein, the terms "dimming" and "light adjustment" and similar terms refer to both brightening and dimming options.

[0090] The first pump light source and the laser light source may each have a corresponding dimming range. The dimming range may refer to a range between 0 watts and a maximum watt, within which the corresponding light source can be driven. This refers in particular to the power provided to the corresponding light source. The maximum optical power of the first pump light source and the laser light source is denoted by W. opt,10,max and W opt,20,max express.

[0091] Dimming, whether brightening or dimming, can be performed stepwise or gradually. The term "dimming" means in particular the switching between 0 Watt and W, respectively. opt,10,max or W opt,20,max There is at least one, and usually multiple, intermediate values ​​in between.

[0092] Therefore, when referring to the dimming range of the first pump light source and the (second) laser light source, this refers specifically to the power (Watts) provided to the respective light sources.

[0093] In particular, the pump light source W is provided 10 The power of the first pump light source is W opt,10 There may be a linear relationship between the optical powers of W and W. Thus, over most, if not substantially all, of the dimming range, W opt,10 With W 10 The ratio between can be substantially constant. Also, in particular, when the laser light source W is provided 20 The power of the laser source is W opt,20 There may be a linear relationship between the optical powers of W and W. Thus, over most, if not substantially all, of the dimming range, W opt,20 With W20 The ratio between can be substantially constant.

[0094] As described above, in the embodiment, the first component light power W lower than the first lighting system light power W opt,comp1 When the predetermined threshold is reached, the second component optical power W of the second lighting system light component opt,comp2 In an embodiment, when the second component optical power W of the first lighting system light component is below the predetermined threshold, the second component optical power W of the first lighting system light component is opt,comp2 can also be greater than zero, and for example, as the first component optical power W of the first lighting system light component opt,comp1 Therefore, in an embodiment, in one or more (corresponding) control modes described herein, in the first part of the first dimming range, WR comp >0. As described above, in other embodiments, in the first part of the first dimming range, WR comp =0.

[0095] In particular, the second component optical power W of the second lighting system light component opt,comp2 and the first component optical power W of the first lighting system light component opt,comp1 Ratio WR comp can (thus) be qualified as WR comp =W opt,comp2 / W opt,comp1 .

[0096] In an embodiment, the control system may be configured to control the second component light power W of the second lighting system light component in the (second) control mode. opt,comp2 and the first component optical power W of the first lighting system light component opt,comp1 Ratio WR comp , that is WR comp =W opt,comp2 / W opt,comp1 , where in the second control mode, WR comp The second portion of the first dimming range is greater than the first portion of the first dimming range.

[0097] When the first dimming level W (of the first pump light source) is exceeded 10,x When the light of the luminescent material may be quenched, it is higher than the first dimming level (but in the embodiment, it is also lower than the first dimming level), and the second component optical power W of the light component of the second lighting system is opt,comp2 The contribution can exceed the first dimming level W 10,x Therefore, when the dimming level exceeds (i.e., is higher than) the first dimming level W 10,xIn an embodiment, the light emitting material is light quenched. In an embodiment, the control system can be configured to control the light emitting material to light when the dimming level of the first dimming range is equal to or higher than 0.7*W. 10,x , especially equal to or higher than 0.9*W 10,x Increase WR comp In this paper, the W of the first pump light source is 10,x Refers to the power of the first pump light source, at which the luminescent material may begin to quench.

[0098] Alternatively or additionally, in an embodiment, the control system may be configured to: opt,comp1 Equal to or higher than 0.2*W opt,10,max Increase WR comp In other embodiments, the control system may be configured to opt,comp1 Equal to or higher than 0.4*W opt,10,max Increase WR comp In other embodiments, the control system may be configured to opt,comp1 Equal to or higher than 0.5*W opt,10,max Increase WR comp In other specific embodiments, the control system can be configured to opt,comp1 Equal to or higher than 0.7*W opt,10,max Increase WR comp .

[0099] In an embodiment, the control system may be configured to maintain WR comp Constant, and W opt,comp1 Less than 0.2*W opt,10,max In other embodiments, the control system may be configured to maintain WR comp Constant, and W opt,comp1 Less than 0.4*W opt,10,max In other embodiments, the control system may be configured to maintain WR comp Constant, and W opt,comp1 Less than 0.5*W opt,10,max In other specific embodiments, the control system can be configured to maintain WR comp Constant, and W opt,comp1 Less than 0.7*W opt,10,max .

[0100] It may even be the case that, when increasing the power of the first pump light source, the spectral power of the first illumination system light component even decreases as the power of the first pump light source increases, as a certain power level. In such a range, there is a negative correlation. Thus, in the third part of the first dimming range, the dimming level in the third part of the first dimming range is related to the first component light power W of the first illumination system light component. opt,comp1In an embodiment where there is a negative correlation between the ratio WR and the control system, the control system may be configured to control the ratio WR in the third control mode. comp (as defined above), wherein in the third control mode, WR in the third portion of the first dimming range comp Greater than WR in the second portion of the first dimming range comp .

[0101] The second portion of the dimming range is at a higher dimming level than the first portion of the dimming range. Likewise, the third portion of the dimming range is at a higher dimming level than the second portion of the dimming range.

[0102] Therefore, in a particular embodiment, the control system may be configured to adjust the light power W of the lighting system light in the fourth control mode. opt,sys The increase of the second component optical power W opt,comp2 , where the optical power of the light across the lighting system is W opt,sys At least a portion of the dimming range, the second component optical power W opt,comp2 The light power of the lighting system is increased by W opt,sys There is a linear or nonlinear relationship between the optical power W of the light across the lighting system and opt,sys At least part of the dimming range, the ratio WR comp (as defined above) increases with brightness adjustment. In an embodiment, the second component optical power W opt,comp2 The light power of the lighting system is increased by W opt,sys In other embodiments, the second component optical power W opt,comp2 The light power of the lighting system is increased by W opt,sys There is a nonlinear relationship between the two. Especially when the quenching is serious, as the light power W of the lighting system increases opt,sys The increase of the second component optical power W increases nonlinearly opt,comp2 Can be useful, for example, even in lighting systems where the optical power W opt,sys The color point can also be maintained at higher levels.

[0103] Therefore, in the embodiment, when the brightness is adjusted, at a temperature above W 10 , W opt,10 , W opt,sys and W opt,comp1 When one or more of the specified thresholds are reached, the WR comp When dimmed, below W 10 , W opt,10 , W opt,sys and W opt,comp1 When one or more of the specified thresholds are reached, the WR comp Therefore, below (W 10 , Wopt,10 , W opt,sys and W opt,comp1 When one or more of the above thresholds are reached, WR comp The value may be chosen to be lower. The phrase "increases above a certain threshold" and similar phrases mean that when one value reaches a certain threshold, another value (especially WR comp The value of ) can be increased. For example, when W 10 or W opt,10 When a certain (predetermined) threshold is reached, WR comp can be increased. Hence, the phrase “at a level above W 10 WR can be increased when a certain threshold is reached comp ” and similar phrases do not mean that WR comp The value will be greater than the threshold W 10 (Note that the former is a ratio and the latter is power), but specifically means that when W 10 When the threshold is reached during dimming, WR comp can be increased. Similarly, this can be applied to the dimming case, that is, when W 10 When the threshold is reached during dimming, WR comp can be reduced. The phrase "WR comp can increase" and similar phrases can also imply that with further brightening, WR comp can be further increased. Similarly, the phrase "WR comp can be lowered" and similar phrases can also imply that with further dimming, WR comp However, as described above, in some embodiments, below one or more parameters such as W 10 , W opt,10 , W opt,sys and W opt,comp1 When the specific threshold of WR comp Can remain constant.

[0104] As described above, in an embodiment, the control system may be configured to operate in one or more control modes according to W 10 , W opt,10 , W opt,sys and W opt,comp1 One or more of the second lighting system light components control the second component light power W opt,comp2 In particular, in an embodiment, the control system may be configured to 10 , W opt,10 , W opt,sys and W opt,comp1 When increasing WR comp (during dimming). This means that during operation, when above W 10 , Wopt,10 and W opt,sys and W opt,comp1 When one or more of the values in, increase WR during dimming, comp that is, relatively more of the second component (relative to the first component) can be provided.

[0105] Therefore, the second component optical power W of the second illumination system light component can be controlled according to W 10 . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,comp2 . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,10 . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,comp2 . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,sys . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,comp2 . Alternatively or additionally, the second component optical power W of the second illumination system light component can be controlled according to W opt,comp1 . As described above, when controlling one or more of W opt,comp2 , W 10 , and W opt,10 , W opt,sys can actually be controlled. opt,comp1 .

[0106] In an embodiment, the threshold can be a fraction of the maximum value of the input power W of the pump light source, that is, a fraction of W 10 . Therefore, in an embodiment, the control system can be configured to increase WR 10,max when above the threshold a*W 10,max (during the dimming of W comp ), where in particular 0 < a ≤ 1, for example 0 < a ≤ 0.7 or 0 < a ≤ 0.5. However, other values are also possible. Therefore, when W 10 reaches the threshold a*W 10 and exceeds this value during (further) dimming, or exceeds this value when further dimming is possible, WR 10,max can be increased. Similarly, when W comp decreases to the threshold a*W 10 during dimming and decreases below this threshold a*W 10,max , WR 10,max can be decreased. comp .

[0107] In an embodiment, the threshold can be a fraction of the maximum value of the optical power W of the pump light source, that is, a fraction of W opt,10 . Therefore, alternatively or additionally, in an embodiment, the control system can be configured to increase WR opt,10,max when above the threshold b*W opt,10,max (during the dimming of W comp ), where in particular 0 < b ≤ 1, for example 0 < b ≤ 0.7 or 0 < b ≤ 0.5. However, other values are also possible. Therefore, when Wopt,10 (or W 10 ) during the brightening period), where in particular 0 < b ≤ l, for example 0 < b ≤ 0.7 or 0 < b ≤ 0.5. However, other values are also possible. Thus, when W opt,10 reaches the threshold b*W opt,10,max , and exceeds this value when (further) brightening, or when it may be further brightened, then WR comp can be increased. Similarly, when during the dimming period, W opt,10 is reduced to the threshold b*W opt,10,max , and is reduced below this threshold b*W opt,10,max , then WR comp can be reduced.

[0108] In an embodiment, the threshold can be a fraction of the maximum value of the optical power W opt,sys of the system light, i.e., a fraction of W opt,sys,最大 . Thus, alternatively or additionally, in an embodiment, the control system can be configured to increase WR opt,sys,最大 when above the threshold c*W comp (during the brightening period of W opt,sys ), where in particular 0 < c ≤ l, for example 0 < c ≤ 0.7 or 0 < c ≤ 0.5. However, other values are also possible. Thus, when W opt,sys reaches the threshold c*W opt,sys,max , and exceeds this value when (further) brightening, then WR comp can be increased. Similarly, during the dimming period, when W opt,sys is reduced to the threshold c*W opt,sys,max , and is reduced below this threshold c*W opt,sys,max , then WR comp can be reduced.

[0109] In an embodiment, the threshold can be a fraction of the maximum value of the optical power W opt,comp1 of the first illumination system light component, i.e., a fraction of W opt,comp1,max . Thus, alternatively or additionally, in an embodiment, the control system can be configured to increase WR opt,comp1,max when above the threshold d*W comp (during the brightening period of W opt,comp1 (or W 10 ), where 0 < d ≤ l, for example 0 < d ≤ 0.7 or 0 < c ≤ 0.5, or 0 < d ≤ 0.4, or 0 < d ≤ 0.2. However, other values are also possible. Thus, when W opt,comp1 reaches the threshold d*W opt,comp1,max , and exceeds this value when (further) brightening, or when it may be further brightened, then WR comp can be increased. Similarly, when during the dimming period, Wopt,comp1 Reduced to the threshold d*W opt,comp,max , and decreases below the threshold d*W opt,comp1,max When comp .

[0110] In this document, many embodiments are described with respect to dimming. However, it should be noted that, likewise, these embodiments may be described with respect to dimming. For example, with reference to the embodiment just discussed, the control system may be configured to adjust the light power W of the lighting system light in the fourth control mode as the light power W of the lighting system light increases. opt,sys The decrease of the second component optical power W opt,comp2 , where the optical power of the light in the lighting system is W opt,sys Within at least a portion of the dimming range, the second component optical power W opt,comp2 The reduced light power of the lighting system light W opt,sys There is a linear or nonlinear relationship between the light power W of the lighting system and opt,sys At least part of the dimming range, the ratio WR comp (as defined above) decreases with dimming.

[0111] As described above, the luminescent material may be configured in a transmissive arrangement relative to the first pump light source. Typically, since a large portion of the first pump light source light will be absorbed by the luminescent material, only a relatively small portion of the first pump light source light will effectively be transmitted through the luminescent material (layer). However, in an embodiment, the laser light source may also be configured upstream of the luminescent material, and in such an embodiment, the luminescent material may also be configured in a transmissive arrangement relative to the laser light source. However, a large portion of the laser light source light may be transmitted through the luminescent material (layer). Therefore, in an embodiment, both the first pump light source and the second light source may be configured upstream of the luminescent material, wherein in particular the luminescent material is transmissive for the laser light source light, wherein the absorption of the laser light source light by the luminescent material is less than 10% of the laser light source light.

[0112] As described above, in embodiments, the optional first optical element may include a wavelength dependent filter, such as a color filter. In embodiments, the optional second optical element may include a wavelength dependent filter, such as a color filter. In embodiments, a single set of optical elements has the functions of the first optical element and the second optical element. In other embodiments, a wavelength dependent filter may not be available. A wavelength dependent filter may, for example, be used to change the spectral distribution of the light of the luminescent material. This may be useful in adjusting the color point and / or color gamut.

[0113] The optical power can be controlled via a feed-forward or feedback loop.

[0114] In an embodiment, the lighting system may further comprise an optical sensor configured to receive a portion of the lighting system light and provide a corresponding sensor signal, wherein the control system is configured to control the first component optical power W of the first lighting system light component according to the sensor signal in one or more control modes. opt,comp1 and the second component optical power W of the second lighting system light component opt,comp2 Alternatively or additionally, the illumination system may further comprise an optical sensor configured to receive part of the first pump light source light and provide a corresponding sensor signal, wherein the control system is configured to control the first component optical power W of the first illumination system light component in one or more control modes. opt,comp1 , and the second component optical power W of the second lighting system light component can be controlled according to the sensor signal opt,comp2 Therefore, in an embodiment, the lighting system may further comprise an optical sensor configured to receive a portion of the lighting system light or a portion of the first pump light source light and provide a corresponding sensor signal, wherein the control system is configured to control the first component optical power W of the first lighting system light component in one or more control modes. opt,comp1 , and the second component optical power W of the second lighting system light component can be controlled according to the sensor signal opt,comp2 In embodiments where the optical sensor is configured to receive part of the light from the first pump light source, typically the luminescent material will be arranged away from the pump light source.

[0115] The first light source and the second light source can provide white system light at an appropriate ratio of the first lighting system light component and the second lighting system light component. Alternatively or additionally, in an embodiment, white light can be generated on the basis of the first light source, the second light source and another light source. In particular, the other light source (also indicated as a third light source herein) can also be controllable.

[0116] Therefore, in an embodiment, the lighting system may further include a third light source configured to generate a third light source light, wherein in one or more control modes, the lighting system light includes: (a) one or more of the first lighting system light component and the second lighting system light component, and (b) optionally, a third light source having a light power W opt,comp3 a third lighting system component of the present invention, wherein the third lighting system light component comprises a third light source light, wherein the third lighting system light component has a third spectral power distribution that is different from the first spectral power distribution and (different from) the second spectral power distribution, and wherein the control system is further configured to control a third component light power W of the third lighting system light component in one or more control modes. opt,comp3 In particular, the third optical power of the third light source light is controllable. Therefore, the third component optical power W of the third illumination system light component opt,comp3Can be controllable.

[0117] It should be noted that in one or more control modes, or even in all control modes, the lighting system may provide non-white lighting system light. However, in particular, in an embodiment, one or more control modes may provide white lighting system light. In the present context, the term "white light" is known to a person skilled in the art. The white light particularly relates to light having a correlated color temperature (CCT) between about 1800K and 20000K, such as between 2000 and 20000K, in particular 2700-20000K, and for general lighting in particular in the range of about 2700K and 6500K. In an embodiment, for backlighting purposes, the CCT may in particular be in the range of about 7000K and 2000K. However further, in an embodiment, the CCT is in particular within about 15SDCM (standard color deviation) from the BBL (black body locus), in particular within about 10SDCM from the BBL, and even more in particular within about 5SDCM from the BBL.

[0118] The terms "visible," "visible light," or "visible emission," and similar terms refer to light having one or more wavelengths in the range of approximately 380-780 nm.

[0119] The lighting device may be part of or may be applied in office lighting systems, home application systems, store lighting systems, home lighting systems, accent lighting systems, spotlight systems, theater lighting systems, fiber optic application systems, projection systems, self-luminous display systems, pixelated display systems, segmented display systems, warning sign systems, medical lighting application systems, indicator sign systems, decorative lighting systems, portable systems, automotive applications, (outdoor) road lighting systems, urban lighting systems, greenhouse lighting systems, horticultural lighting, digital projection, etc. The lighting system may also be included in an endoscope system; therefore, the lighting system may be applied in endoscopy.

[0120] Therefore, in a further aspect, the present invention also provides a projection system or an illumination device comprising the illumination system as defined herein.

[0121] In yet another aspect, the present invention also provides a method for controlling a lighting system light of a lighting system, wherein the lighting system comprises a first light source as defined herein and a second light source as defined herein, wherein the method comprises controlling in a control mode a second component light power W of the second lighting system light component opt,comp2 , according to the first component optical power W of the first lighting system light component opt,comp1 To control the second component optical power W opt,comp2In particular, the method may comprise compensating the nonlinear dimming behavior of the first lighting system light component with the second lighting system light component. In an embodiment, the method may comprise (when dimming) at a level above W 10 , W opt,10 , W opt,sys and W opt,comp1 When one or more of the specified thresholds are reached, the WR comp Similarly, in an embodiment, the method may include (when dimming) 10 , W opt,10 , W opt,sys and W opt,comp1 When one or more of the specified thresholds are reached, the WR comp Therefore, below a certain threshold, WR is lower than above a certain threshold. comp The value may be lower. In an embodiment, the method may include within the dimming range of the lighting system light (ie, especially within the dimming range of W opt,sys The color point and / or the dominant wavelength of the combination of the first lighting system light component and the second lighting system light component are kept substantially constant within a dimming range.

[0122] The present invention also provides a software product for executing the method and / or a control system for executing the method. BRIEF DESCRIPTION OF THE DRAWINGS

[0123] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which like reference numerals indicate like parts, and in which:

[0124] Figures 1-10B schematically depict some embodiments;

[0125] Figures 11A-11B Some (application) embodiments are schematically depicted;

[0126] Figures 12A-12B Some aspects and embodiments are schematically depicted; and

[0127] Figures 13A-13B Some aspects of the invention are schematically depicted.

[0128] The schematic diagrams are not necessarily drawn to scale. DETAILED DESCRIPTION

[0129] In the present invention, it is particularly proposed to use a laser phosphor based light source, which can have improved brightness. In an embodiment, it is proposed to use a phosphor to convert a blue laser, for example until a saturation point is reached (temperature and / or intensity saturation, whichever is reached first). In an embodiment, above this point, when a higher converted light intensity is required, a laser can be added to the system. For example, a blue laser can be used in order to obtain green light using a luminescent material that converts blue light into green light. At the saturation point, a green laser can be added to the system to obtain a higher intensity, for example see Figure 1, where the left side ( Figure 1A ) without adding laser, while the right side ( Figure 1B ) laser is added. For example, in an embodiment, the phosphor converted light has a peak wavelength X, and the green laser has a peak wavelength Y. In particular, Y is in the range of X-30nm to X+30nm, more particularly in the range of X-20nm to X+20nm, and even more particularly in the range of X-10nm to X+10nm.

[0130] In the arrangement shown in Figure 1, the arrangement is a transmissive arrangement, which means that the first pump light source is arranged upstream of the luminescent material (layer) and the luminescent material light escaping from the opposite side of the luminescent material (layer) is used as at least a part of the illumination system light. In addition, the arrangement shown in Figure 1 is also a transmissive arrangement because the laser light source light provided to one side of the luminescent material (layer) is at least partially, more particularly substantially completely, transmitted through the luminescent material (layer).

[0131] Particularly, the absorption of the laser light is less than 10%, more particularly less than 5%, and even more particularly less than about 3%.

[0132] FIG1 schematically depicts an embodiment of an illumination system 1000 configured to generate illumination system light 1001. The illumination system light 1001 may include one or more of the following: (i) a first component light having a light power W opt,comp1 The first illumination system light component 1101, and (ii) a second component light power W opt,comp2 The second lighting system light component 1201. The optical power W of the lighting system light 1001 opt,sys Can be controllable.

[0133] The illumination system 1000 comprises a first light source 110 and a second light source 120. The first light source 110 may comprise a first pump light source 10 configured to generate a first pump light source light 11. The illumination system 1000 (such as the first light source) may further comprise a luminescent material 200 configured to convert at least a portion of the first pump light source light 11 into a luminescent material light 201. The first light source 110, optionally in combination with a first optical element (not shown), may be configured to provide a first illumination system light component 1101. The first illumination system light component 1101 in particular comprises at least a portion of the luminescent material light 201. The first illumination system light component 1101 has a first spectral power distribution, whose spectral intensity is the spectral intensity of a first wavelength λ1 (see also below). The first optical power of the first pump light source light 11 is controllable, whereby the first component optical power W of the first illumination system light component 1101 is controlled. opt,comp1 May be controllable. The second light source 120 may include a laser light source 20 configured to generate a laser light source light 21. The second light source 120, optionally in combination with a second optical element (not shown), may be configured to provide a second illumination system light component 1201. The second illumination system light component 1201 particularly includes at least a portion of the laser light source light 21. The second illumination system light component 1201 has a second spectral power distribution different from the first spectral power distribution, and its spectral intensity is the spectral intensity of the second wavelength λ2 (see also below). The second wavelength λ2 is particularly selected from the range of λ1-30nm≤λ2≤λ1+30nm. The second optical power of the laser light source light 21 may be controllable, whereby the second component optical power W of the second illumination system light component 1201 opt,comp2 Can be controllable.

[0134] As mentioned above, the luminescent material 200 is specifically configured to substantially not absorb the laser light source light 21 .

[0135] Herein, the luminescent material is schematically depicted as being configured remote from the pump light source. However, the luminescent material may also be in optical contact or even physical contact with the pump light source. When remotely configured, as schematically depicted in a number of embodiments, the laser light source light 21 may be propagated (transmitted or reflected; herein, in some embodiments, transmission is schematically depicted). In such embodiments, it is particularly relevant that the luminescent material 200 is specifically configured to substantially not absorb the laser light source light 21.

[0136] The system 1000 may further include a control system 30, which is particularly configured to control the first lighting system light component 1101 according to the first component light power W in one or more control modes. opt,comp1 Control the second component optical power W of the second lighting system light component 1201 opt,comp2 .

[0137] On the left side of Figure 1 ( Figure 1A ), showing a mode without the second illumination system light component 1201; on the right ( Figure 1B ) shows a pattern having first and second illumination system light components 1101, 1201 respectively.

[0138] 1 and other figures also schematically depict an embodiment of an illumination system 1000, wherein the first pump light source 10 and the second light source 120 are both arranged upstream of the luminescent material 200. In particular, the luminescent material 200 is transmissive to the laser light source light 21, wherein the absorption of the laser light source light 21 by the luminescent material 200 is less than 10% of the laser light source light 21.

[0139] The first pump light source 10 may have a maximum first optical power W opt,10,max The laser light source 20 may have a maximum second optical power W opt,20,max , where the ratio of the second optical power of the laser light source light 21 to the first optical power of the first pump light source light 11 is WR opt,max , where WR opt,max =W opt,20,max / W opt,10,max , and where 0.01≤W opt,20,max / W opt,10,max ≤1.

[0140] Reference numerals 115 and 125 refer to one or more optional first and / or second optical elements, which may include one or more wavelength dependent filters, for example for fine tuning the first illumination system light component and / or the second illumination system light component.

[0141] Some examples of combinations of the first light source and the second light source are provided below:

[0142]

[0143] In the last column (italics), possible additional colors are indicated which may be provided by the additional light source, which may provide white light in combination with the first and second light sources. The options marked in bold in the table are the most relevant options.

[0144] Thus, the system comprising the first and second light sources can be combined with other light sources such as solid state lighting (SSL) light sources to obtain combined light (e.g. white light). For example, the proposed green phosphor based light source can be combined with blue and red LED light sources.

[0145] Typically, dichroic mirrors are used to combine beams ( Figure 2 ). In an embodiment, the proposed illumination device can be combined with other lasers, such as red and blue lasers.

[0146] Alternatively or additionally, the proposed lighting device can also be combined with a laser and an LED light source, for example a blue LED and a red laser.

[0147] Figure 2 One of the light sources is schematically depicted to include a first light source 130a and a second light source 130b. These light sources can, for example, be configured to produce green light. The system can also include a first additional light source 130a and / or a second additional light source 130b, the first additional light source 130a being configured to produce a first additional light source light 131a, which can be, for example, blue light, and a second additional light source light 131b being configured to produce a second additional light source light 131b, which can be, for example, red light. In this way, in one or more control modes, the lighting system light 1001 can include one or more of (i) a first lighting system light component 1101, (ii) a second lighting system light component 1201, (iii) a first additional light source light 131a, and (iv) a second additional light source light 131b.

[0148] therefore, Figure 2 An embodiment of an illumination system 1000 is schematically depicted, the illumination system 1000 further comprising a third light source 130 configured to generate a third light source light 131. In particular, the third light power of the third light source light 131 is controllable.

[0149] In one or more control modes, the lighting system light 1001 may include: (a) one or more of a first lighting system light component 1101 and a second lighting system light component 1201, and (b) optionally having a third component light power W opt,comp The third lighting system light component 1301 may include a third light source light 131. The third lighting system light component 1301 may have a third spectral power distribution that is different from the first spectral power distribution and different from the second spectral power distribution. The third optical power of the third light source light 131 may be controllable, whereby the third component optical power W of the third lighting system light component 1301 is controlled. opt,comp3 In particular, the control system 30 may also be configured to control the third component optical power W of the third lighting system light component 1301 in one or more control modes. opt,comp3 .

[0150] Reference numeral 135 refers to an optical element that reflects a portion of light and transmits a portion of light, such as a dichroic filter.

[0151] Of course, additional optics can often be used to create the beam profile required for the application. These optics are not shown here.

[0152] In fact, Figure 2 Two additional third light sources 130 are schematically depicted, indicated by reference numerals 130a and 130b, respectively. Their respective third light source lights 131 are indicated by reference numerals 131a and 131b, respectively. Their respective third illumination system light components 1301 are indicated by reference numerals 1301a and 1301b, respectively. Of course, there may be more than two additional third light sources 130. Two or more additional third light sources 130 may refer to two or more substantially identical additional third light sources 130, for example from the same box in an embodiment. However, two or more additional third light sources 130 may also refer to two or more different types of light sources.

[0153] Together with one or more (optionally different) third light sources 130, the lighting system 1000 can generate white system light 1001 in the control mode. This can be the case, for example, when the first light source 110 is configured to generate green and / or yellow light, for example, and the third light source is configured to generate blue light or blue and red light.

[0154] In an embodiment, two or even three lighting systems may be combined; see respectively Figure 3-4 For example, referring to the table above, (a) option 1, and (b) options 3 and / or 6 and / or 8 can be combined to provide white light (see Figure 3 ). For example, referring to the table above: (a) option 1, and (b) option 2 and / or 5, and (c) option 4 and / or 7 and / or 8, can be combined to provide white light (see Figure 4 ). In this configuration, the color point, such as the white point, can be controlled over a relatively large dimming range of the system. Figure 3 An embodiment of a lighting system 1000 is schematically depicted, which may actually include two of the lighting systems described herein, indicated by reference numerals 1000a and 1000b, respectively, which may be configured to generate lighting system lights 1001a and 1001b, respectively, having different spectral power distributions. Figure 4 Schematically depicted is an embodiment of an illumination system 1000, which may actually include three of the illumination systems described herein, indicated by reference numerals 1000a, 1000b, and 1000c, respectively, which may be configured to generate illumination system lights 1001a, 1001b, and 1001c, respectively, having mutually different spectral power distributions. Likewise, the luminescent materials 200 may be indicated as first luminescent materials 200a and second luminescent materials 200b, respectively. Likewise, this may apply to the third luminescent material 200c. Similarly, this applies to the first light sources 110 indicated by reference numerals 110a, 110b, 110c, etc.; likewise, this applies to the second light sources 120a, 120b, 120c, etc.

[0155] Therefore, in an embodiment, the lighting system may include a control system 30 (or controller) for controlling the amount of laser light ( FIG. 5A to FIG. 5B ).

[0156] In an embodiment, the lighting device may include a laser output sensor (an embodiment of an optical sensor) that measures the amount of laser light ( Figure 6 ). Alternatively or additionally, the laser sensor may also be formed by a laser drive current monitor adapted to monitor the laser drive current ( Figure 7 ). Alternatively or additionally, the lighting system may include a converted light sensor (an embodiment of an optical sensor) that measures the amount of converted light ( Figure 8 ). A sensor (such as an optical sensor) is denoted by reference numeral 50 .

[0157] therefore, Figure 6-8 An embodiment is schematically depicted, wherein the lighting system 1000 further comprises an (optical) sensor 50, which is for example configured to receive a portion of the lighting system light 1001, or to measure other parameters (eg in particular related to W opt,comp1 Related parameters), and provide corresponding sensor signals, wherein the control system 30 is configured to control the first component optical power W of the first lighting system light component 1101 in one or more control modes. opt,comp1 and the second component optical power W of the second lighting system light component 1101 opt, com p 2 .

[0158] Of course, in embodiments, multiple (different) light sources ( Fig. 9 ). Herein, by way of example, a plurality of first light sources 10 are depicted.

[0159] Alternatively or additionally, a plurality of second light sources may be used.However, alternatively or additionally, a plurality of second light sources 20 may also be used (not shown).

[0160] One of the light sources may also be a HLD type light source. Thus, in an embodiment, instead of a laser light source to pump the phosphor, an LED may be used to pump the transparent light rod ( FIG. 10A to FIG. 10B ). FIG. 10A to FIG. 10B An embodiment of an illumination system 1000 is schematically depicted, wherein the first light source 110 comprises a plurality of first pump light sources 10 and an elongated light emitting polymerizer 100, wherein the plurality of first pump light sources 10 are configured to illuminate a radiation input surface 111 included in a side surface 140 of the elongated light emitting polymerizer 100 with first pump light source light 11, and wherein the elongated light emitting polymerizer 100 is configured to provide a luminescent material light 201 emitted from a radiation exit surface 112 included in an end surface 142 of the elongated light emitting polymerizer 100. Fig. 10A shows a mode in which the second light source 120 does not contribute, Fig. 10B Schematically depicts an embodiment in which the second light source 120 contributes. In the former mode, the illumination system light 1001 may include only the first component 1101; in the latter mode, the illumination system light may include components 1101 and 1201. Fig. 10A In , the second component is not provided; in Fig. 10B A second component is also provided.

[0161] like Figure 11A-11B As shown, the illumination system may be, for example, composed of a projection system 1 ( Fig.11A ) or lighting device 2 ( Fig. 11B )composition.

[0162] Figures 12A-12D Some modes of operation taking into account possible quenching behavior are schematically depicted.

[0163] Fig. 12A The x-axis shows the power (in watts) supplied to the first laser source, denoted by W 10 For example, W 10 Can be between 0 (watt) and W 10,max Therefore, in the embodiment, the dimming range of the first light source is between 0 and W. 10,max The dimming range is indicated on the x-axis. The left y-axis indicates W opt,comp1 , which can vary between 0 (watts) and a maximum value, with the maximum value being W opt,comp1,max The right y-axis (also) shows W 10 Because it is assumed that there is a basically linear relationship between the input power of the pump light source and the optical output power, W can also be indicated on the right y-axis. opt,10 , W opt,10 At 0 and W opt,10,max The slanted dashed line from the origin to the upper right will indicate the W 10 and W opt,10 There is a (basically) linear relationship between .

[0164] Fig. 12A An embodiment is schematically depicted, wherein the first pump light source 10 has a first dimming range, within which the first pump light source 10 can be dimmed, wherein in a first portion I of the first dimming range, a dimming level (W 10 ) and the first component optical power W of the first lighting system light component opt,comp1 However, at the vertical dashed line between I and II, W opt,comp1= 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 opt,comp1 There is a nonlinear (positive) relationship between W and . Therefore, there is essentially no quenching in the first part I, but there is quenching in the second part II, and the quenching increases with the brightening, so that at the end of the second part II, even when the brightening is further increased, W opt,comp1 As described above, in embodiments, the luminous flux from the phosphor material may increase linearly with input power until saturation effects (thermal and / or light induced) begin to limit conversion. Fig. 12A An embodiment is also schematically depicted, wherein in the third portion III of the first dimming range, the dimming level within the third portion of the first dimming range is proportional to the first component light power W of the first lighting system light component 1101. opt,comp1 There is therefore probably a part of the dimming range where quenching will reach a point where increasing the power of the laser source effectively leads to W opt,comp1 In the third part III, quenching can therefore be relatively severe and have a negative impact on the converted light.

[0165] The second component optical power W of the second lighting system light component opt,comp2 The first component light power W of the first lighting system light component opt,comp1 Ratio WR comp =W opt,comp2 / W opt,comp1 The dimming level of the first pump light source is schematically depicted on the x-axis. As described above, at the origin, the dimming level may be 0 watts, and at the right end of the x-axis, the dimming level may be indicated as W. 10,max (See also above). At a first dimming level W (of the pump light source) 10,x , the light of the luminescent material may begin to quench. This is indicated by the vertical dashed line in the figure, that is, W 10,x express.

[0166] The dimming range of the laser light source is not within Fig. 12A Depicted in.

[0167] However, as described above, it is assumed that there is a substantially linear relationship between the input power and the optical output power of the laser light source.

[0168] also, Fig. 12A Some other embodiments are also schematically depicted. For example, the dimming level of the first pump light source (ie, W 10 ) The second component optical power W of the second lighting system light component 1201 is opt,comp2and the first component optical power W of the first lighting system light component 1101 opt,comp1 Since it can be predetermined that the first dimming level W 10,x The luminescent material may begin to quench at a certain value of W, so in an embodiment, it can be determined that only when it is equal to or greater than W 10,x , or at another value (such as a*W 10,x ), the second illumination system light component 1201 is generated. The value of a can be selected, for example, from the range of 0.5-1, for example, from the range of 0.5-0.9, for example, 0.5-0.7. However, the value of a can also be about 1. The value a=0.7 is 0.7*W 10,x The vertical dashed line at represents the first component optical power W associated with a specific dimming level. opt,comp1 You can use W opt,comp1,x In this paper, W opt,comp1,x2 Yes and W 10,x The first optical power W opt,comp1 , and W opt,comp,x1 is 0.7*W 10,x The first optical power W opt,comp1 .

[0169] Thus, as will be clear to those skilled in the art, one can for example opt,comp1 (See also e.g. Figure 6 ) The second component optical power W of the second lighting system light component 1201 is opt,comp2 The first component optical power W of the first lighting system light component 1101 opt,comp1 (However, other options are possible (see also above)). For example, in an embodiment, it may be selected to only opt,comp1,max Add the second lighting system light component 1201, for example, see also Fig.12D However, it is also possible to only opt,comp1,max A second lighting system light component 1201 is added, see also e.g. Fig. 12C The value of d may be selected, for example, from the range of 0.5-1, for example from the range of 0.5-0.9, for example 0.5-0.7. However, the value of d may also be approximately 1. The value d=0.7 is indicated by the horizontal dashed line 0.7*W opt,comp1,max express.

[0170] However, all types of other embodiments are possible. However, in general, when dimming above the dimming threshold, the WR is lower than when dimming below the dimming threshold. comp Similarly, when dimming below the dimming threshold, WR comp The value will decrease.

[0171] Fig. 12B The dimming range of the system is schematically depicted on the lower x-axis, and the optical power is depicted on the right y-axis. The straight oblique line is the optical power of the light illuminating the system. As schematically depicted, this straight line can be obtained by combining the first component and the second component. This can be achieved in several ways. Fig. 12B An embodiment is depicted very schematically, in which a second illumination system optical component is introduced when dimming results in quenching. Thus, the second illumination system optical component starts at the vertical dashed line between the first part I and the second part II of the dimming range. The dashed line represents the optical power of the second illumination system optical component, i.e. W opt,comp2 Of course, the pump light source is further dimmed so that the optical component W of the first illumination system opt,comp1 The optical power of the pump light source is effectively reduced to a certain level, which can better keep the dimming level of the pump light source constant and transmit the light to the optical component of the second illumination system, namely W opt,comp2 , that is, in particular, laser light source light, further dimming the lighting system light.

[0172] As mentioned above, and as Fig. 12B As schematically depicted in the embodiment of FIG. 1 , the laser light source includes a second dimming range, within which the laser light source 20 can be dimmed. Therefore, in the embodiment, in the control mode, the WR comp Greater than WR in the first portion of the first dimming range comp .

[0173] The control system is particularly configured to control the ratio WR in one or more control modes. comp .

[0174] like Fig. 12B As schematically (also) depicted in FIG. 1 , the control system may be configured to control the light power W of the lighting system light in one or more control modes. opt,sys The increase of the second component optical power W opt,comp2 , where the optical power of the light in the lighting system is W opt,sys Within at least a portion of the dimming range, the second component optical power W opt,comp2 The light power of the lighting system is increased by W opt,sys There is a linear or nonlinear relationship between the optical power W of the illumination system light 1001 and opt,sys Over at least part of the dimming range, the ratio WR comp The maximum power of the lighting system light (including at least one or more, especially at least two, of the first lighting system light component and the second lighting system light component) can be expressed as W opt,sys,最大 Indicates. Fig. 12BAs schematically depicted in FIG. , when the first component optical power W opt,comp1 When the nonlinear behavior is exhibited over a portion of the dimming range, the second component optical power W opt,comp2 The light power of the lighting system is increased by W opt,sys There will also be a nonlinear relationship between them to compensate for the first component optical power W opt,comp1 In this way, in the control mode, the color point of the color component provided by the first component and the second component is within the dimming range W opt,sys The interior can remain basically the same.

[0175] like Fig. 12C and 12D As schematically depicted in FIG. 1 , in an embodiment, the control system may be configured to only provide a first component light power W above the first lighting system light component 1101. opt,comp1 In the case of a predetermined threshold value, in one or more control modes, according to the first component optical power W of the first lighting system light component 1101 opt,comp1 , controlling the second component optical power W of the second lighting system light component 1201 opt,comp2 .

[0176] like Fig. 12C As schematically depicted in FIG. , above the first dimming level W 10,x When (see Fig. 12A ), the light emitting material light 201 is quenched, and the control system can be configured to when the dimming level of the first dimming range is equal to or higher than 0.7*W 10,x Increase WR comp . (Therefore) similarly Fig. 12C As schematically depicted in one or more control modes, in a first portion of a first dimming range, WR comp >0.

[0177] However, in Fig. 12B and 12D In the exemplary embodiment, in one or more control modes, in a first portion of a first dimming range, WR comp ≈0.

[0178] exist Fig.12D In the embodiment, an embodiment is also schematically depicted, wherein WR comp In the dimming range up to the vertical dashed line, WR can be 0 (see some non-limiting examples of thresholds above). At the vertical dashed line, WR comp Can be found at W opt,comp1 and W opt,comp2 When it changes between opt,comp2 is zero, and above this threshold, W opt,comp1 Can be zero. opt,comp1 W is zeroopt,comp2 When non-zero, WR comp It can be defined as ∞.

[0179] Therefore, in this context, other modes (different from, for example, Fig. 12C and the modes schematically depicted in 12d), in these other modes substantially only the second illumination system light component 1201 is available, and optionally one or more other illumination system light components (see also below) are available, but the first illumination system light component 1101 is not available.

[0180] In some embodiments, the system can be used to produce linear behavior of the optical power of the lighting system light or one or more colors within the lighting system light over a large dimming range. However, the present invention does not exclude nonlinearity. For example, when necessary, Fig. 12B The slashes in can also be curved.

[0181] Therefore, in the embodiment, at a temperature higher than W 10 , W opt,10 , W opt,sys and W opt,comp1 When one or more specific thresholds are reached, the WR comp Can be increased. Below W 10 , W opt,10 , W opt,sys and W opt,comp1 When dimming, WR comp Therefore, below a certain threshold, WR comp The value can be lower.

[0182] refer to Fig.12D , when W opt,comp1 Reaching the threshold W opt,comp1,max , and when it is possible to further brighten beyond this value, WR comp In fact, in the embodiment, WR comp From the vertical dashed line to the left, it can be zero, and from the vertical dashed line to the right, it can be ∞.

[0183] Figure 13A-13BSome aspects of the present invention are schematically depicted. As schematically depicted, the first lighting system light component 1101 has a first spectral power distribution, whose spectral intensity is the spectral intensity of the first wavelength λ1. In addition, the second lighting system light component 1201 has a second spectral power distribution different from the first spectral power distribution, whose spectral intensity is the spectral intensity of the second wavelength λ2, wherein the second wavelength λ2 is selected from the range of λ1-30nm≤λ2≤λ1+30nm. As schematically depicted, in an embodiment, the first spectral power distribution may be band-shaped. For example, the first wavelength λ1 is the dominant wavelength. In an embodiment, the second wavelength λ2 may also be the dominant wavelength. In an embodiment, l2 may be selected from the range of λ1-10nm≤λ2≤λ1+10nm. In an embodiment, the first light component 1101 and the second light component 1201 may have substantially the same color point.

[0184] The dashed emission band refers to the third light source light 131, which provides a third illumination system light component 1301, which can also be controlled by the control system.

[0185] See also Fig. 13B Instead of a single peak of the laser light source light 21, a plurality of peaks may also be provided. Reference numerals 21a and 21b denote different laser light sources, respectively. The associated second wavelength is denoted by λ 2a and λ 2b In the embodiment shown in FIG. 1 , the related second illumination system light components 1201 are denoted by reference numerals 1201a and 1201b respectively.

[0186] Thus, embodiments of the present invention provide a light source with improved brightness based on laser phosphors.

[0187] The term "plurality" means two or more.

[0188] Those skilled in the art will understand the terms "substantially" or "essentially" and similar terms herein. The terms "substantially" or "essentially" may also include embodiments with "completely", "entirely", "all", etc. Therefore, in embodiments, substantially or essentially may also be without adjectives. Where applicable, the term "substantially" or the term "essentially" may also relate to 90% or higher, such as 95% or higher, in particular 99% or higher, even more in particular 99.5% or higher, including 100%.

[0189] The term "comprising" also includes embodiments wherein the term "comprising" means "consisting of.

[0190] The term "and / or" particularly relates to one or more items mentioned before and after "and / or". For example, the phrase "item 1 and / or item 2" and similar phrases may relate to one or more of item 1 and item 2. The term "comprising" may refer to "consisting of" in one embodiment, but may also refer to "comprising at least the defined substances and optionally one or more other substances" in another embodiment.

[0191] Furthermore, the terms first, second, third, etc. in the specification and claims are used to distinguish similar elements and not necessarily to describe a sequential or chronological order. It should be understood that the terms so used are interchangeable under appropriate circumstances, and that the embodiments of the invention described herein are capable of operation in other sequences than those described or illustrated herein.

[0192] Herein, an apparatus, device or system etc. may be described during operation. As will be clear to one skilled in the art, the present invention is not limited to methods of operation, or an apparatus, device or system in operation.

[0193] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.

[0194] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

[0195] Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. Unless the context clearly requires otherwise, throughout the specification and claims, the words "comprises", "comprising", etc. are to be interpreted as inclusive, rather than exclusive or exhaustive; that is, in the sense of "including but not limited to".

[0196] The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0197] The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a device claim, an apparatus claim or a system claim enumerating several means, several of these means may be implemented by one and the same item of hardware. The fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0198] The present invention also provides a control system that can control an apparatus, device or system, or can perform the method or process described herein. In addition, the present invention also provides a computer program product that, when running on a computer functionally coupled to or included in the apparatus, device or system, controls one or more controllable elements of the apparatus, device or system.

[0199] The present invention also applies to an apparatus, device or system comprising one or more features described in the specification and / or shown in the drawings. The present invention also relates to a method or process comprising one or more features described in the specification and / or shown in the drawings.

[0200] The various aspects discussed in this patent may be combined to provide additional advantages. In addition, those skilled in the art will appreciate that the embodiments may be combined, and more than two embodiments may be combined. In addition, some features may form the basis for one or more divisional applications.

Claims

1. A lighting system (1000) configured to generate lighting system light (1001), wherein the lighting system light (1001) comprises one or more of the following: (i) having a first component optical power W opt,comp1 The first lighting system light component (1101) and (ii) having a second component light power W opt,comp2 A second lighting system light component (1201) of the present invention, wherein the lighting system (1000) comprises: a first light source (110) comprising a first pump light source (10) configured to generate a first pump light source light (11) and a luminescent material (200) configured to convert at least a portion of the first pump light source light (11) into luminescent material light (201), wherein the first light source (110) optionally in combination with a first optical element (115) is configured to provide a first illumination system light component (1101), wherein the first illumination system light component (1101) comprises at least a portion of the luminescent material light (201), wherein the first illumination system light component (1101) has a first spectral power distribution having a spectral intensity at a first wavelength λ1; - a second light source (120), comprising a laser light source (20) configured to generate laser light source light (21), wherein the second light source (120), optionally in combination with a second optical element (125), is configured to provide a second illumination system light component (1201), wherein the second illumination system light component (1201) comprises at least a portion of the laser light source light (21), wherein the second illumination system light component (1201) has a second spectral power distribution different from the first spectral power distribution, the second spectral power distribution having a spectral intensity at a second wavelength λ2, wherein the second wavelength λ2 is selected from the range of λ1-30nm≤λ2≤λ1+30nm; a control system (30) configured to control, in at least one control mode, the first component light power W of the first lighting system light component (1101) according to the first component light power W of the first lighting system light component (1101) opt,comp1 To control the second component optical power W of the second lighting system light component (1201) opt,comp2 , wherein the control system (30) is further configured to, in a first control mode, only control the first component light power W above the first lighting system light component (1101) opt,comp1 In the case of a predetermined threshold, according to the first component light power W of the first lighting system light component (1101) opt,comp1 Control the second component light power W of the second lighting system light component (1201) opt,comp2 , and the control system (30) is configured to maintain a color point of a combination of the first lighting system light component (1101) and the second lighting system light component (1201) within a predetermined range of + / - 0.05 of a predetermined color point.

2. The illumination system (1000) according to claim 1, wherein the first pump light source (10) has a maximum first optical power W opt,10,max , wherein the laser light source (20) has a maximum second optical power W opt,20,max , wherein the second optical power of the laser light source light (21) and the first optical power of the first pump light source light (11) have a ratio WR opt,max , where WR opt,max =W opt,20,max / W opt,10,max , and where 0.01≤W opt,20,max / W opt,10,max ≤1.

3. The illumination system (1000) according to claim 1, wherein the first spectral power distribution is zonal, and wherein the first wavelength λ1 is a dominant wavelength.

4. An illumination system (1000) according to any one of the preceding claims 1 to 3, wherein the first light source (110) comprises a plurality of first pump light sources (10) and an elongated light emitting polymer (100), wherein the plurality of first pump light sources (10) are configured to illuminate a radiation input surface (111) comprised by a side surface (140) of the elongated light emitting polymer (100) with light from the first pump light source (11), and wherein the elongated light emitting polymer (100) is configured to provide the luminescent material light (201) emitted from a radiation exit surface (112) comprised by an end surface (142) of the elongated light emitting polymer (100).

5. The illumination system (1000) according to any one of the preceding claims 1-3, wherein the first light source (110) comprises a solid-state laser light source, and wherein the second wavelength λ2 is selected from the range of λ1-10 nm≤λ2≤λ1+10 nm.

6. The lighting system (1000) according to any of the preceding claims 1-3, wherein the control system (30) is configured to maintain a dominant wavelength of a combination of the first lighting system light component and the second lighting system light component within a predetermined range of a predetermined dominant wavelength + / - 10 nm.

7. The lighting system (1000) according to any one of the preceding claims 1 to 3, wherein the first pump light source (10) has a first dimming range, the first pump light source (10) being capable of being dimmed up and down across the first dimming range, wherein across a first portion of the first dimming range, a dimming level within the first portion of the first dimming range is proportional to the first component optical power W of the first lighting system light component (1101). opt,comp1 There is a linear relationship between the dimming level within the second part of the first dimming range and the first component light power W of the first lighting system light component (1101) across the second part of the first dimming range. opt,comp1 There is a nonlinear relationship between the two, and wherein the laser light source (20) includes a second dimming range, and the laser light source (20) can be brightened and dimmed across the second dimming range.

8. The lighting system (1000) according to claim 7, wherein the control system (30) is configured to control the second component optical power W of the second lighting system light component (1201) in a second control mode. opt,comp2 The first component optical power W of the first lighting system light component (1101) opt,comp1 Ratio WR comp , WR comp =W opt,comp2 / W opt,comp1 , wherein in the second control mode, WR comp is greater in the second portion of the first dimming range than in the first portion of the first dimming range.

9. The lighting system (1000) according to claim 8, wherein the luminescent material light (201) is across a first dimming level W of the pump light source (10). 10,x quenching, and wherein the control system (30) is configured to dim the light at a level equal to or higher than 0.7*W in the first dimming range 10,x Increase WR comp .

10. The lighting system (1000) according to any one of the preceding claims 8-9, wherein across a third portion of the first dimming range, a dimming level within the third portion of the first dimming range is proportional to the first component light power W of the first lighting system light component (1101). opt,comp1 There is a negative relationship between the ratio WR and the control system (30), wherein the control system (30) is configured to control the ratio WR as defined in claim 8 in the third control mode. comp , wherein in the third control mode, WR comp is greater in the third portion of the first dimming range than in the second portion of the first dimming range.

11. The lighting system (1000) according to claim 8, wherein the control system (30) is configured to control the lighting system light (1001) in a fourth control mode according to the light power W opt,sys The increase of the second component optical power W opt,comp2 , wherein the optical power W of the light (1001) across the lighting system opt,sys The second component optical power W opt,comp2 The light power W of the lighting system light (1001) is increased opt,sys There is a linear or nonlinear relationship between the optical power W of the light (1001) across the illumination system and opt,sys at least a portion of the dimming range, the ratio WR defined in claim 8 comp Increases as you brighten.

12. The illumination system (1000) according to any one of the preceding claims 1 to 3, wherein both the first pump light source (10) and the second light source (120) are arranged upstream of the luminescent material (200), and wherein the luminescent material (200) is transmissive to the laser light source light (21), wherein the absorption of the laser light source light (21) by the luminescent material (200) is less than 10% of the laser light source light (21), and wherein the optional first optical element (115) comprises a wavelength-dependent filter.

13. The lighting system (1000) according to any one of the preceding claims 1 to 3, further comprising an optical sensor (50), the optical sensor being configured to receive a portion of the lighting system light (1001) or the first pump light source light (11) and to provide a corresponding sensor signal, wherein the control system (30) is configured to control the first component optical power W of the first lighting system light component (1101) according to the sensor signal in the one or more control modes. opt,comp1 and the second component optical power W of the second lighting system light component (1201) opt,comp2 .

14. The lighting system (1000) according to any one of the preceding claims 1 to 3, further comprising a third light source (130) configured to generate third light source light (131), wherein in the one or more control modes, the lighting system light (1001) comprises: (a) one or more of the first illumination system light component (1101) and the second illumination system light component (1201), and (b) optionally a third component light power W opt,comp3 a third lighting system component (1301) of the present invention, wherein the third lighting system light component (1301) comprises the third light source light (131), wherein the third lighting system light component (1301) has a third spectral power distribution different from the first spectral power distribution and the second spectral power distribution, and wherein the control system (30) is further configured to control the third component light power W of the third lighting system light component (1301) in the one or more control modes. opt,comp3 .

15. A lighting device, comprising the lighting system (1000) according to any one of claims 1-14.

16. A projection system comprising the illumination system (1000) according to any one of claims 1-14.

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